Glossary Letter V

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V Model - The V-Model, also called the Vee-Model, is a product-development process originally developed in Germany for government defense projects.

v-commerce - Virtual commerce (sometimes known as vCommerce, v-commerce, or vCom) is a type of application, service, or product feature that helps enterprises implement strategies and design Web sites for e-commerce (the buying and selling of goods and services using the Internet).

V-Model - The V-Model, also called the Vee-Model, is a product-development process originally developed in Germany for government defense projects.

V-Model (Vee-Model) - The V-Model, also called the Vee-Model, is a product-development process originally developed in Germany for government defense projects.

v-rep - A virtual agent (sometimes called an intelligent virtual agent, virtual rep or chatbot) is a software program that uses scripted rules and, increasingly, artificial intelligence applications to provide automated service or guidance to humans.

V.22 - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.22bis - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.32 - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.32bis - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.32terbo - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.34 - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.34bis - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.35 - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.42 - The V Series Recommendations from the ITU-TS are summarized in the table below.

V.90 - V.90 is a A Tour of the Internet, Who Runs It, Standards Org, approved by the International Telecommunications Union (ITU-TS), for transmitting data downstream to modems at 56 Kbps (thousand bits per second).

V/m - The standard unit of electric field (E-field) strength is the volt per meter (V/m).

V2P - Virtual to physical (V2P) is a term that refers to the migration of an operating system (OS), application programs and data from a virtual machine or disk partition to a computer's main hard disk.

V2V - Virtual to virtual (V2V) is a term that refers to the migration of an operating system (OS), application programs and data from a virtual machine or disk partition to another virtual machine or disk partition.

VA - Volt-ampere (VA) is a measurement of power in a direct current (DC) electrical circuit.

VAAI - vStorage API for Array Integration (VAAI) is an application program interface (API) framework from VMware that enables certain storage tasks, such as thin provisioning, to be offloaded from the VMware server virtualization hardware to the storage array.

vacuum tube - Also see cathode ray tube (CRT), the specialized kind of vacuum tube that is in most desktop display monitors.

vacuum tube (VT, electron tube or valve) - Also see cathode ray tube (CRT), the specialized kind of vacuum tube that is in most desktop display monitors.

VAD - In Voice over IP (VOiP), voice activation detection (VAD) is a software application that allows a data network carrying voice traffic over the Internet to detect the absence of audio and conserve bandwidth by preventing the transmission of "silent packets" over the network.

VAL IT (value from IT investments) - VAL IT (value from IT investments) is a framework that outlines governance best practices for information technology-enabled business investments.

validated learning - Validated learning is an approach to demonstrating progress against business goals when traditional key performance indicators (KPIs) are not very useful.

validation set - A validation set is a set of data used to train artificial intelligence (AI) with the goal of finding and optimizing the best model to solve a given problem.

validator - An HTML validator is a quality assurance program used to check Hypertext Markup Language (HTML) markup elements for syntax errors.

validity period - A cryptoperiod (sometimes called a key lifetime or a validity period) is a specific time span during which a cryptographic key setting remains in effect.

value added network - A value-added network (VAN) is a private network provider (sometimes called a turnkey communications line) that is hired by a company to facilitate electronic data interchange (EDI) or provide other network services.

value added reseller - A value-added reseller (VAR) is a company that resells software, hardware and networking products and provides value beyond order fulfillment.

Value Analysis - Incremental Revenue (Value) Analysis is a process used to calculate the value of each agent in a call center.

value chain - A value chain is a concept describing the full chain of a business's activities in the creation of a product or service -- from the initial reception of materials all the way through its delivery to market, and everything in between.

value driver - A value driver is an activity or capability that adds worth to a product, service or brand.

value innovation - Value innovation is the implementation of upgrades or new technologies designed to help a company differentiate its products or services while lowering costs.

value proposition - A value proposition is a statement that clearly identifies the benefits a company's products and services will deliver to its customers.

value stream mapping - Value stream mapping is a Toyota lean manufacturing visualization tool for documenting all the processes that are required to bring a product to market.

value-added network - A value-added network (VAN) is a private network provider (sometimes called a turnkey communications line) that is hired by a company to facilitate electronic data interchange (EDI) or provide other network services.

value-added reseller - A value-added reseller (VAR) is a company that resells software, hardware and networking products and provides value beyond order fulfillment.

value-added reseller (VAR) - A value-added reseller (VAR) is a company that resells software, hardware and networking products and provides value beyond order fulfillment.

value-based healthcare - Value-based healthcare, also known as value-based care, is a payment model that rewards healthcare providers for providing quality care to patients.

value-based pricing - Value-based pricing is a method of arriving at an amount to charge for goods or services through assessing their perceived value to the purchaser.

value-sensitive design (VSD) - Value-sensitive design (VSD) is a concept and methodology that stresses the importance of incorporating human values in the design of technology throughout the design process.

valve - Also see cathode ray tube (CRT), the specialized kind of vacuum tube that is in most desktop display monitors.

valve - A valve is a mechanism that opens and closes to control the flow of fluids.

vam - SPIT (spam over Internet telephony), sometimes known as vam (voice or VoIP spam), is unsolicited bulk messages broadcast over VoIP (Voice over Internet Protocol) to phones connected to the Internet.

VAMP - vStorage API for Multipathing (VAMP) is a set of application program interfaces (APIs) from VMware that help to control I/O path selection in a host to storage devices.

VAN - A virtual area network (VAN) is a network on which users are enabled to share a more visual sense of community through high band-width connections.

VAN - A value-added network (VAN) is a private network provider (sometimes called a turnkey communications line) that is hired by a company to facilitate electronic data interchange (EDI) or provide other network services.

van Eck phreaking - Van Eck phreaking is a form of electronic eavesdropping that reverse engineers the electromagnetic fields (EM fields) produced by a computing device.

vandal - A vandal is an executable file, usually an applet or an ActiveX control, associated with a Web page that is designed to be harmful, malicious, or at the very least inconvenient to the user.

vanilla - In information technology, vanilla (pronounced vah-NIHL-uh) is an adjective meaning plain or basic.

vanity metrics - A vanity metric is a unit of measurement that looks positive but fails to provide the viewer with any information that can be used to drive future actions.

vanity URL (vanity uniform resource locator) - A vanity uniform resource locator is a truncated URL that extends an organization's brand.

vapor cooling - Phase-change cooling, also called vapor cooling, is a microprocessor-cooling technology that works according to the same principles as a conventional refrigerator, freezer or air conditioner.

vaporware - Vaporware is software or hardware that is announced publicly and actively promoted by a vendor even though it does not yet exist.

VAR - A value-added reseller (VAR) is a company that resells software, hardware and networking products and provides value beyond order fulfillment.

VAR agreement (value-added reseller agreement) - A VAR agreement is a legal contract between a manufacturer and a value-added reseller that specifies details of the rights and obligations of both parties.

VAR-to-VAR - VAR-to-VAR is a business model based on cooperation between value-added resellers (VARs) that allows the companies to obtain professional services and solutions outside their specialties or geographic areas.

variable - In programming, a variable is a value that can change, depending on conditions or on information passed to the program.

variable length subnet mask - Definition: Learn what a variable-length subnet mask (VLSM) is and how it allows network engineers to reduce the number of wasted IP addresses in each subnet.

variable manipulation - Variable manipulation is a method of specifying or editing variables in a computer program.

variable speed limit (VSL) - A variable speed limit is a flexible restriction on the rates at which motorists can drive on a given stretch of road.

variable-length subnet mask - Definition: Learn what a variable-length subnet mask (VLSM) is and how it allows network engineers to reduce the number of wasted IP addresses in each subnet.

variable-length subnet mask (VLSM) - Definition: Learn what a variable-length subnet mask (VLSM) is and how it allows network engineers to reduce the number of wasted IP addresses in each subnet.

VASA - vStorage APIs for Storage Awareness (VASA) is a set of application program interfaces (APIs), released with VMware’s vSphere 5, that enables vSphere vCenter to recognize the capabilities of storage arrays that support the API.

vascular ID - Finger vein ID is a biometric authentication system that matches the vascular pattern in an individual's finger to previously obtained data.

VAX - VAX (Virtual Address eXtension) is an established line of mid-range server computers from the Digital Equipment Corporation (DEC).

VAX (Virtual Address eXtension) - VAX (Virtual Address eXtension) is an established line of mid-range server computers from the Digital Equipment Corporation (DEC).

VB - Visual Basic (VB) is an event-driven programming language and environment from Microsoft that provides a graphical user interface (GUI) which allows programmers to modify code by simply dragging and dropping objects and defining their behavior and appearance.

VB .NET - Visual Basic .

VB NET - Visual Basic .

VB.NET - Visual Basic .

VBI - The vertical blanking interval (VBI) is a portion of a television signal that can carry information other than video or audio, such as closed-caption text and stock market data.

Vblock (VCE Vblock) - Vblock is VCE’s hyper-converged infrastructure (HCI) product family.

VBN - Visitor-based networking (VBN) is the provision of high-speed Internet access for mobile PC users in need of temporary service in public places.

VBNET - Visual Basic .

vBNS - The vBNS (very high-speed Backbone Network Service) is a network that interconnects a number of supercomputer centers in the United States and is reserved for science applications requiring the massive computing that supercomputers can provide.

VBR - Vouch By Reference (VBR) is a protocol for adding third-party certification to email.

VBS.SST - The Anna Kournikova VBS.

VBScript - VBScript is an interpreted script language from Microsoft that is a subset of its Visual Basic programming language designed for interpretation by Web browsers.

VC - Venture capital (VC) is funding invested, or available for investment, in an enterprise that offers the probability of profit along with the possibility of loss.

vCalendar - vCalendar is an industry standard format for exchanging scheduling and activity-recording information electronically.

VCAP (VMware Certified Advanced Professional) - VMware Certified Advanced Professional (VCAP) is VMware's third highest certification level out of four levels.

vCard - A vCard is an electronic business (or personal) card and also the name of an industry specification for the kind of communication exchange that is done on business or personal cards.

VCB proxy (VMware Consolidated Backup proxy) - VCB proxy (VMware Consolidated Backup proxy) is the server that collects virtual machine (VM) backup data from VMware Consolidated Backup.

VCD - VCD (also called video CD, video compact disc or "disc") is a compact diskformat based on CD-ROM XAthat is specifically designed to hold MPEG-1video data and to include interactive capabilities.

VCD (video CD or video compact disc) - VCD (also called video CD, video compact disc or "disc") is a compact diskformat based on CD-ROM XAthat is specifically designed to hold MPEG-1video data and to include interactive capabilities.

VCDX (VMware certified design expert) - VCDX (VMware certified design expert) is VMware's highest certification level.

vCIO (virtual CIO) - A vCIO, or virtual CIO, serves as an organization's chief information officer, but is a contractor rather than a regular employee.

vCom - Virtual commerce (sometimes known as vCommerce, v-commerce, or vCom) is a type of application, service, or product feature that helps enterprises implement strategies and design Web sites for e-commerce (the buying and selling of goods and services using the Internet).

vCommerce - Virtual commerce (sometimes known as vCommerce, v-commerce, or vCom) is a type of application, service, or product feature that helps enterprises implement strategies and design Web sites for e-commerce (the buying and selling of goods and services using the Internet).

vCPE (virtual customer premises equipment) - Virtual customer premises equipment (also referred to as vCPE or cloud CPE) are enterprise network services delivered through software.

VCR - A VCR (videocassette recorder) is an electromechanical device for recording and playing back full-motion audio-visual programming on cassettes containing magnetic tape.

VCR (videocassette recorder) - A VCR (videocassette recorder) is an electromechanical device for recording and playing back full-motion audio-visual programming on cassettes containing magnetic tape.

VCSEL - A vertical cavity surface emitting laser (VCSEL) is a specialized laser diode that promises to revolutionize fiber optic communications by improving efficiency and increasing data speed.

VDA (Virtual Desktop Access) - Windows Virtual Desktop Access (VDA) is an authorization strategy that requires each device seeking access to a virtual desktop in a Microsoft Virtual Desktop Infrastructure (VDI) to be licensed.

VDD - In certain Microsoft operating systems, a virtual device driver is a program that handles software interrupts from the operating system (rather than hardware interrupts) for each of the computer's main hardware devices, including the hard disk drive controller, keyboard, and serial and parallel ports.

VDI - Virtual desktop infrastructure (VDI) is a desktop virtualization technology wherein a desktop operating system, typically Microsoft Windows, runs and is managed in a data center.

VDI boot storm - A virtual desktop infrastructure (VDI boot storm is the degradation of service that occurs when a significant number of end users boot up within a very narrow time frame and overwhelm the network with data requests.

VDS - A virtual private server (VPS), also called a virtual dedicated server (VDS), is a virtual server that appears to the user as a dedicated server, but that is actually installed on a computer serving multiple websites.

VDT - VDT (video display terminal, or sometimes visual display terminal) is a term used, especially in ergonomic studies, for the computer display.

VDT (video display terminal, visual display terminal) - VDT (video display terminal, or sometimes visual display terminal) is a term used, especially in ergonomic studies, for the computer display.

VDU - A video display unit (VDU) consists of:A computer output device that uses a cathode ray tube or other technology to present visual imagesOne or more input devices, such as a keyboard, a mouse, or both.

vector - A vector is a quantity or phenomenon that has two independent properties: magnitude and direction.

vector graphics - Vector graphics is the creation of digital images through a sequence of commands or mathematical statements that place lines and shapes in a given two-dimensional or three-dimensional space.

vector graphics rendering - Vector graphics rendering, sometimes abbreviated VML, refers to scalable vector graphics (SVG) used in Web pages.

vector graphics rendering (VML) - Vector graphics rendering, sometimes abbreviated VML, refers to scalable vector graphics (SVG) used in Web pages.

Vector Markup Language - Vector Markup Language (VML) is an XML-based language that facilitates the use of vector graphics on the Internet, especially on Web sites.

Vector Markup Language (VML) - Vector Markup Language (VML) is an XML-based language that facilitates the use of vector graphics on the Internet, especially on Web sites.

vectored interrupt - In a computer, a vectored interrupt is an I/O interrupt that tells the part of the computer that handles I/O interrupts at the hardware level that a request for attention from an I/O device has been received and and also identifies the device that sent the request.

vectorized - Vector graphics is the creation of digital images through a sequence of commands or mathematical statements that place lines and shapes in a given two-dimensional or three-dimensional space.

Vee Model - The V-Model, also called the Vee-Model, is a product-development process originally developed in Germany for government defense projects.

Vee-Model - The V-Model, also called the Vee-Model, is a product-development process originally developed in Germany for government defense projects.

Veeam Backup & Replication - Veeam Backup & Replication is a software product developed by Veeam Software to back up, restore and replicate data on virtual machines (VMs).

Veepers - Veepers is a product that is used to animate digital images of people (or other creatures) for video presentations in which the characters appear to talk.

vehicle intelligence - Vehicle intelligence is the application of sensors, mechatronics and artificial intelligence (AI) to enhance vehicles or make them fully autonomous driverless cars.

vehicle to infrastructure (V2I or v2i) - Vehicle-to-infrastructure (V2I or V2X) is a communication model that allows vehicles to share information with the components that support a country's highway system.

vehicle-to-vehicle communication (V2V communication) - Vehicle-to-vehicle communication (V2V communication) is the wireless transmission of data between motor vehicles.

velocity - Velocity is a vector expression of the displacement that an object or particle undergoes with respect to time.

vendor - A vendor is an individual or company that sells goods or services to somone else in the economic production chain.

Vendor Independent Messaging - VIM (Vendor Independent Messaging) is an application program interface (API) that facilitates the exchange of e-mail and attachments among programs from different vendors.

Vendor Independent Messaging (VIM) - VIM (Vendor Independent Messaging) is an application program interface (API) that facilitates the exchange of e-mail and attachments among programs from different vendors.

vendor lock-in - Vendor lock-in is a situation in which a customer using a product or service cannot easily transition to a competitor’s product or service.

vendor managed inventory - Vendor-managed inventory (VMI) is an inventory management technique in which a supplier of goods, usually the manufacturer, is responsible for optimizing the inventory held by a distributor.

vendor management office - A vendor management office (VMO) is an internal unit within an enterprise that is charged with evaluating third-party providers of goods and services, supervising day-to-day interactions and managing longer-term relationships.

vendor management office (VMO) - A vendor management office (VMO) is an internal unit within an enterprise that is charged with evaluating third-party providers of goods and services, supervising day-to-day interactions and managing longer-term relationships.

vendor management system (VMS) - A vendor management system (VMS) is an enterprise software platform that allows companies to control the process of procuring and managing a flexible workforce, including temporary employees, statement-of-work (SOW) employees, and freelance or contract employees.

vendor neutral - Vendor neutrality is a business and design approach that seeks to ensure broad compatibility and interchangeability of products and technologies.

vendor neutral archive (VNA) - A vendor neutral archive (VNA) is a technology that stores medical images in a standard format and interface, making them accessible to healthcare professionals regardless of what proprietary system created the images.

vendor risk management - Vendor risk management (VRM) is a comprehensive plan for identifying and decreasing potential business uncertainties and legal liabilities regarding the hiring of 3rd party vendors for IT products and services.

vendor risk management (VRM) - Vendor risk management (VRM) is a comprehensive plan for identifying and decreasing potential business uncertainties and legal liabilities regarding the hiring of 3rd party vendors for IT products and services.

vendor-managed inventory - Vendor-managed inventory (VMI) is an inventory management technique in which a supplier of goods, usually the manufacturer, is responsible for optimizing the inventory held by a distributor.

vendor-managed inventory (VMI) - Vendor-managed inventory (VMI) is an inventory management technique in which a supplier of goods, usually the manufacturer, is responsible for optimizing the inventory held by a distributor.

Venice Project - Joost, formerly known as the Venice Project, is an IPTV service based on peer-to-peer (P2P) technology.

Venmo - Venmo is a smartphone app that designed to transfer payments from one user to another through connected bank accounts.

Venn diagram - A Venn diagram is an illustration of the relationships between and among sets, groups of objects that share something in common.

venture capital - Venture capital (VC) is funding invested, or available for investment, in an enterprise that offers the probability of profit along with the possibility of loss.

venture capital (VC) - Venture capital (VC) is funding invested, or available for investment, in an enterprise that offers the probability of profit along with the possibility of loss.

vEPC (virtual Evolved Packet Core) - The vEPC offers a framework to support converged voice and data on 4G Long-Term Evolution networks.

verb / predicate - A verb is a word that indicates a physical or mental action or a state of being.

verbose logging - Verbose logging is a computer logging mode that records more information than the usual logging mode.

VeriChip - VeriChip is an injectable identification chip that can be inserted under the skin of a human being to provide biometric verification.

Veritas Backup Exec (Symantec Backup Exec) - Veritas Backup Exec is a data protection software product that supports virtual, physical and cloud platforms.

Veritas NetBackup (Symantec NetBackup) - Veritas NetBackup -- known as Symantec NetBackup from 2005 to 2016 -- is a backup and recovery software suite designed for enterprise users.

Verizon Communications v. Federal Communications Commission (2014) - Verizon Communications v.

Verizon Data Breach Investigations Report (DBIR) - The Verizon Data Breach Investigations Report (DBIR) is an annual publication that provides data from and analysis of information security incidents, with a specific focus on data breaches.

Verizon VERIS (Vocabulary for Event Recording and Incident Sharing) Framework - The VERIS (Vocabulary for Event Recording and Incident Sharing) Framework is a taxonomy that standardizes how security incidents are described and categorized.

Veronica - Veronica is a program that allowed you to search the files of the Internet's Gopher servers for a particular search string.

VersaModular Eurocard bus - VMEbus (VersaModular Eurocard bus) is a bus (computer data path) system, designed by Motorola, Signetics, Mostek, and Thompson CSF, that is used in industrial, commercial, and military applications worldwide.

VersaStack - VersaStack is a converged infrastructure reference architecture developed as a collaborative effort of IBM and Cisco.

version control - Version control (also known as revision control or source control) is a category of processes and tools designed to keep track of multiple different versions of software, content, documents, websites and other information in development.

Versioned Object Base - A Versioned Object Base (VOB) is a centralized database that stores version information about the files and folders in a software configuration management (SCM) system.

Versioned Object Base (VOB) - A Versioned Object Base (VOB) is a centralized database that stores version information about the files and folders in a software configuration management (SCM) system.

versioning - Versioning is the creation and management of multiple releases of a product, all of which have the same general function but are improved, upgraded or customized.

vertical blanking interval - The vertical blanking interval (VBI) is a portion of a television signal that can carry information other than video or audio, such as closed-caption text and stock market data.

vertical blanking interval (VBI) - The vertical blanking interval (VBI) is a portion of a television signal that can carry information other than video or audio, such as closed-caption text and stock market data.

vertical cavity surface emitting laser - A vertical cavity surface emitting laser (VCSEL) is a specialized laser diode that promises to revolutionize fiber optic communications by improving efficiency and increasing data speed.

vertical cavity surface emitting laser (VCSEL) - A vertical cavity surface emitting laser (VCSEL) is a specialized laser diode that promises to revolutionize fiber optic communications by improving efficiency and increasing data speed.

vertical cloud - A vertical cloud is a set of cloud computing services optimized for use in a particular industry, or for a specific business model.

vertical farming - Vertical farming is the practice of growing vegetables and fruit in vertically stacked layers.

vertical interval time code - Vertical interval time code (abbreviated VITC and sometimes pronounced VIHT-see) is a timing signal that is part of a video recording.

vertical interval time code (VITC) - Vertical interval time code (abbreviated VITC and sometimes pronounced VIHT-see) is a timing signal that is part of a video recording.

vertical line - The vertical line, also called the vertical slash or upright slash (|), is used in mathematical notation in place of the expression "such that" or "it is true that.

vertical line (vertical slash or upright slash) - The vertical line, also called the vertical slash or upright slash (|), is used in mathematical notation in place of the expression "such that" or "it is true that.

vertical market - A vertical market is a particular industry or group of enterprises in which similar products or services are developed and marketed using similar methods (and to whom goods and services can be sold).

vertical portal - Vortal is also short for voice portal.

Vertical SaaS - Vertical SaaS describes a type of Software as a Service cloud computing solution created for a specific industry.

Vertical SaaS (Software as a Service) - Vertical SaaS describes a type of Software as a Service cloud computing solution created for a specific industry.

vertical search engine - A vertical search engine is a search engine that is dedicated to a particular area of focus.

vertical slash - The vertical line, also called the vertical slash or upright slash (|), is used in mathematical notation in place of the expression "such that" or "it is true that.

vertical solutions provider - On the Internet, a vertical solutions provider (VSP) is a company that focuses on delivering industry-specific application hosting services to customers in a specific vertical market such as manufacturing, health care, retailing, or financial service.

vertical solutions provider (VSP) - On the Internet, a vertical solutions provider (VSP) is a company that focuses on delivering industry-specific application hosting services to customers in a specific vertical market such as manufacturing, health care, retailing, or financial service.

vertical takeoff and landing (VTOL) aircraft - A vertical takeoff and landing (VTOL) aircraft is a vehicle that can depart, hover and land vertically.

very high frequency - The VHF (very high frequency) range of the radio spectrum is the band extending from 30 MHz to 300 MHz.

very high speed Backbone Network Service - The vBNS (very high-speed Backbone Network Service) is a network that interconnects a number of supercomputer centers in the United States and is reserved for science applications requiring the massive computing that supercomputers can provide.

very high-speed Backbone Network Service - The vBNS (very high-speed Backbone Network Service) is a network that interconnects a number of supercomputer centers in the United States and is reserved for science applications requiring the massive computing that supercomputers can provide.

Very Large Database - While there is apparently no official or standard definition for the term Very Large Database (VLDB), it is sometimes used to describe databases occupying magnetic storage in the terabyte range and containing billions of table rows.

Very Large Database (VLDB) - While there is apparently no official or standard definition for the term Very Large Database (VLDB), it is sometimes used to describe databases occupying magnetic storage in the terabyte range and containing billions of table rows.

Very Large Scale Integration - VLSI (very large-scale integration) is the current level of computer microchip miniaturization and refers to microchips containing in the hundreds of thousands of transistor s.

Very Large Scale Integration (VLSI) - VLSI (very large-scale integration) is the current level of computer microchip miniaturization and refers to microchips containing in the hundreds of thousands of transistor s.

very large-scale integration - VLSI (very large-scale integration) is the current level of computer microchip miniaturization and refers to microchips containing in the hundreds of thousands of transistor s.

very long instruction word - Very long instruction word (VLIW) describes a computer processing architecture in which a language compiler or pre-processor breaks program instruction down into basic operations that can be performed by the processor in parallel (that is, at the same time).

Very Small Aperture Terminal - VSAT (Very Small Aperture Terminal) is a satellite communications system that serves home and business users.

VESA - VESA Local Bus (sometimes called the VESA VL bus) is a standard interface between your computer and its expansion slot that provides faster data flow between the devices controlled by the expansion cards and your computer's microprocessor.

VESA Local Bus - VESA Local Bus (sometimes called the VESA VL bus) is a standard interface between your computer and its expansion slot that provides faster data flow between the devices controlled by the expansion cards and your computer's microprocessor.

VESA Local Bus (VESA VL bus) - VESA Local Bus (sometimes called the VESA VL bus) is a standard interface between your computer and its expansion slot that provides faster data flow between the devices controlled by the expansion cards and your computer's microprocessor.

VESA VL bus - VESA Local Bus (sometimes called the VESA VL bus) is a standard interface between your computer and its expansion slot that provides faster data flow between the devices controlled by the expansion cards and your computer's microprocessor.

vestigial sideband - Vestigial sideband (VSB) is a type of amplitude modulation (AM) technique (sometimes called VSB-AM) that encodes data by varying the amplitude of a single carrier frequency.

vestigial sideband (VSB) - Vestigial sideband (VSB) is a type of amplitude modulation (AM) technique (sometimes called VSB-AM) that encodes data by varying the amplitude of a single carrier frequency.

VFAT - Virtual File Allocation Table (VFAT) is the part of the Windows 95 and later operating system that handles long file names, which otherwise could not be handled by the original file allocation table file allocation table (FAT) programming.

VGA - The term display mode refers to the characteristics of a computer display, in particular the maximum number of colors and the maximum image resolution (in pixels horizontally by pixels vertically).

VGA card - A video adapter (alternate terms include graphics card, display adapter, video card, video board and almost any combination of the words in these terms) is an integrated circuit card in a computer or, in some cases, a monitor that provides digital-to-analog conversion, video RAM, and a video controller so that data can be sent to a computer's display.

VHD - Virtual hard disk (VHD) is a disk image file format for storing the complete contents of a hard drive.

VHDCI (Very High Density Cable Interconnect) - Very High Density Cable Interconnect (VHDCI) is a compact 68-contact multipurpose connection type.

VHDX (Hyper-V virtual hard disk) - VHDX is a Hyper-V virtual hard disk (VHD) format found in Windows Server 2012.

VHE - In mobile computing, the Virtual Home Environment (VHE) is the concept that a network supporting mobile users should provide them the same computing environment on the road that they have in their home or corporate computing environment.

VHF - The VHF (very high frequency) range of the radio spectrum is the band extending from 30 MHz to 300 MHz.

VHS - VHS (Video Home System) is a widely-adopted videocassette recording (VCR) technology that was developed by Japan Victor Company (JVC) and put on the market in 1976.

VHS (Video Home System) - VHS (Video Home System) is a widely-adopted videocassette recording (VCR) technology that was developed by Japan Victor Company (JVC) and put on the market in 1976.

vi - Virtual Instrument file is used by National Instruments' LabVIEW development software.

Vi improved - Vim is an open-source text editor designed for working with programming code in Unix.

VI3 - VMware Infrastructure 3 (VI3) is a software suite designed to centralize and optimize desktop management and data center resources through virtualization.

Viber - Viber is a VoIP and instant messaging application with cross-platform capabilities that allows users to exchange audio and video calls, stickers, group chats, and instant voice and video messages.

vidblog - A vlog (or video blog) is a blog that contains video content.

Video as a Service (VaaS) - Video as a Service (VaaS) is a delivery model where video conferencing capabilities are outsourced to a managed service provider and delivered over an IP network.

video blog - A vlog (or video blog) is a blog that contains video content.

video board - A video adapter (alternate terms include graphics card, display adapter, video card, video board and almost any combination of the words in these terms) is an integrated circuit card in a computer or, in some cases, a monitor that provides digital-to-analog conversion, video RAM, and a video controller so that data can be sent to a computer's display.

video card - A video adapter (alternate terms include graphics card, display adapter, video card, video board and almost any combination of the words in these terms) is an integrated circuit card in a computer or, in some cases, a monitor that provides digital-to-analog conversion, video RAM, and a video controller so that data can be sent to a computer's display.

video card (graphics card) - A video adapter (alternate terms include graphics card, display adapter, video card, video board and almost any combination of the words in these terms) is an integrated circuit card in a computer or, in some cases, a monitor that provides digital-to-analog conversion, video RAM, and a video controller so that data can be sent to a computer's display.

Video CD - VCD (also called video CD, video compact disc or "disc") is a compact diskformat based on CD-ROM XAthat is specifically designed to hold MPEG-1video data and to include interactive capabilities.

video compact disc - VCD (also called video CD, video compact disc or "disc") is a compact diskformat based on CD-ROM XAthat is specifically designed to hold MPEG-1video data and to include interactive capabilities.

video conferencing - Video conferencing is live, visual connection between two or more remote parties over the internet that simulates a face-to-face meeting.

video conferencing - Video conferencing is live, visual connection between two or more remote parties over the internet that simulates a face-to-face meeting.

video display terminal - VDT (video display terminal, or sometimes visual display terminal) is a term used, especially in ergonomic studies, for the computer display.

video display unit - A video display unit (VDU) consists of:A computer output device that uses a cathode ray tube or other technology to present visual imagesOne or more input devices, such as a keyboard, a mouse, or both.

video display unit (VDU) - A video display unit (VDU) consists of:A computer output device that uses a cathode ray tube or other technology to present visual imagesOne or more input devices, such as a keyboard, a mouse, or both.

video e-mail - Video e-mail is an e-mail message with a video file either inserted in the body of the message or accessible through a hypertext link.

video game design - Video game design is the process of conceiving, planning and directing the creation of a video game.

Video glossary - 3-point edit - Marking three of the four points needed to place a source clip into a program and allowing the editing software to calculate the fourth point.

Video Home System - VHS (Video Home System) is a widely-adopted videocassette recording (VCR) technology that was developed by Japan Victor Company (JVC) and put on the market in 1976.

video interview - A video interview is a job interview that takes place remotely and uses video technology as the communication medium.

video on demand - Video on demand (VoD) is an interactive TV technology that allows subscribers to view programming in real time or download programs and view them later.

video on demand (VoD) - Video on demand (VoD) is an interactive TV technology that allows subscribers to view programming in real time or download programs and view them later.

video or visual display terminal - VDT (video display terminal, or sometimes visual display terminal) is a term used, especially in ergonomic studies, for the computer display.

Video Privacy Protection Act of 1988 - The Video Privacy Protection Act of 1988 is United States legislation that prevents wrongful disclosure of an individual's personally identifiable information stemming from their rental or purchase of audiovisual material, including videotapes, DVDs and video games.

video projector - A video projector is an electronic device that takes input audio/visual signals and outputs video onto any flat surface.

video RAM - VRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display.

video resume - A video resume is a brief account of a job applicant's professional experience, qualifications and interests, submitted to a prospective employer in video form.

video streaming service - A video streaming service is an on demand online entertainment source for TV shows, movies and other streaming media.

video telephony - Video telephony is full-duplex, real-time audio-visual communication between or among end users.

video wall - A video wall is a large display consisting of more than one video screen fixed together to form a single logical screen.

videocasette recorder - A VCR (videocassette recorder) is an electromechanical device for recording and playing back full-motion audio-visual programming on cassettes containing magnetic tape.

videocassette recorder - A VCR (videocassette recorder) is an electromechanical device for recording and playing back full-motion audio-visual programming on cassettes containing magnetic tape.

videoconference - Video conferencing is live, visual connection between two or more remote parties over the internet that simulates a face-to-face meeting.

videogrammetry - Videogrammetry is the extraction of an object’s measurements from a video; measurements may be gathered from multiple angles or multiple videos.

videophone - Video telephony is full-duplex, real-time audio-visual communication between or among end users.

view - In a database management system, a view is a way of portraying information in the database.

VIM - VIM (Vendor Independent Messaging) is an application program interface (API) that facilitates the exchange of e-mail and attachments among programs from different vendors.

Vim - Vim is an open-source text editor designed for working with programming code in Unix.

Vim (Vi improved) - Vim is an open-source text editor designed for working with programming code in Unix.

VIM specification - VIM (Vendor Independent Messaging) is an application program interface (API) that facilitates the exchange of e-mail and attachments among programs from different vendors.

Vimeo - Vimeo is a U.

Vine (Vine app) - Vine is a free mobile application that enables users to record and share an unlimited number of short, looping video clips with a maximum length of six seconds.

Vint Cerf (Vinton Gray Cerf) - Vint Cerf (Vinton Gray Cerf) is an American computer scientist best known as an Internet pioneer.

Viper - This definition is generally duplicated under Viper.

VIPER (View, Interactor, Presenter, Entity and Router) - VIPER (View, Interactor, Presenter, Entity and Router) is a design pattern for software development that develops modular code based on clean design architecture.

viral ad - A viral ad is an advertisement that achieves wide-spread reach because people who view it are inclined to share it among their social networks.

viral content - Viral content is material, such as an article, an image or a video that spreads rapidly online through website links and social sharing.

viral marketing - Viral marketing is any marketing technique that induces websites or users to pass on a marketing message to other sites or users, creating a potentially exponential growth in the message's visibility and effect.

virtual - In computing, virtual is a digitally replicated version of something real.

virtual (federated) database - A virtual database, also called a federated database, is a system in which several databases appear to function as a single entity.

virtual address - A virtual address is a binary number in virtual memory that enables a process to use a location in primary storage (also called main memory) independently of other processes, and to use more space than actually exists in primary storage.

Virtual Address eXtension - VAX (Virtual Address eXtension) is an established line of mid-range server computers from the Digital Equipment Corporation (DEC).

virtual agent - A virtual agent (sometimes called an intelligent virtual agent, virtual rep or chatbot) is a software program that uses scripted rules and, increasingly, artificial intelligence applications to provide automated service or guidance to humans.

virtual agent - A virtual agent (sometimes called an intelligent virtual agent, virtual rep or chatbot) is a software program that uses scripted rules and, increasingly, artificial intelligence applications to provide automated service or guidance to humans.

virtual appliance - A virtual appliance is a virtual machine image file consisting of a pre-configured operating system environment and a single application.

virtual area network - A virtual area network (VAN) is a network on which users are enabled to share a more visual sense of community through high band-width connections.

virtual area network (VAN) - A virtual area network (VAN) is a network on which users are enabled to share a more visual sense of community through high band-width connections.

virtual asset - A virtual asset is a representation of currency in some environment or situation, such as a video game or a financial trading simulation exercise.

virtual assistant - A virtual assistant is an electronic audio or audio/video avatar-centered program that uses artificial intelligence to perform tasks for the user.

virtual assistant (AI assistant) - A virtual assistant is an application program that can understand natural human language, speak natural language and complete electronic tasks for the end user.

virtual browser - A virtual browser is a browser that is logically isolated from the underlying computer's operating system (OS).

virtual call center - A virtual call center is a call center in which the organization's representatives are geographically dispersed, rather than being situated at work stations in a building operated by the organization.

Virtual Choir - Virtual Choir is an assembly of geographically dispersed singers performing choral works, led by composer Eric Whitacre.

virtual circuit - A virtual circuit is a circuit or path between points in a network that appears to be a discrete, physical path but is actually a managed pool of circuit resources from which specific circuits are allocated as needed to meet traffic requirements.

virtual classroom - A virtual classroom is an online learning environment.

virtual commerce - Virtual commerce (sometimes known as vCommerce, v-commerce, or vCom) is a type of application, service, or product feature that helps enterprises implement strategies and design Web sites for e-commerce (the buying and selling of goods and services using the Internet).

virtual commerce (vCommerce, v-commerce, or vCom) - Virtual commerce (sometimes known as vCommerce, v-commerce, or vCom) is a type of application, service, or product feature that helps enterprises implement strategies and design Web sites for e-commerce (the buying and selling of goods and services using the Internet).

virtual commissioning - Virtual commissioning is the practice of using 3D technology to create a simulation model of a manufacturing plant so that proposed changes and upgrades can be tested before they are implemented to the actual plant.

virtual community - A virtual community is a community of people sharing common interests, ideas, and feelings over the Internet or other collaborative networks.

virtual CPU (vCPU) - A virtual CPU (vCPU) also known as a virtual processor, is a physical central processing unit (CPU) that is assigned to a virtual machine (VM).

virtual cube - A virtual cube is a subset of one or two existing cubes in a database.

virtual database - A virtual database, also called a federated database, is a system in which several databases appear to function as a single entity.

Virtual Dedicated Graphics Acceleration (vDGA) - Virtual Dedicated Graphics Acceleration (vDGA) is a graphics-acceleration function that bypasses the ESXi hypervisor to tie a dedicated GPU in the ESXi host directly to a Horizon View virtual desktop to provide near-native performance.

virtual dedicated server - A virtual private server (VPS), also called a virtual dedicated server (VDS), is a virtual server that appears to the user as a dedicated server, but that is actually installed on a computer serving multiple websites.

virtual desktop - A virtual desktop is a computer operating system that does not run directly on the endpoint hardware from which a user accesses it.

virtual desktop infrastructure - Virtual desktop infrastructure (VDI) is a desktop virtualization technology wherein a desktop operating system, typically Microsoft Windows, runs and is managed in a data center.

virtual desktop manager - A virtual desktop manager is a program that allows a computer user to have more than one user interface available simultaneously on a single computer.

virtual desktop pool - A virtual desktop pool is a group of virtual desktops that are hosted on identically configured virtual machines.

virtual device driver - In certain Microsoft operating systems, a virtual device driver is a program that handles software interrupts from the operating system (rather than hardware interrupts) for each of the computer's main hardware devices, including the hard disk drive controller, keyboard, and serial and parallel ports.

virtual disaster recovery - Virtual disaster recovery is a type of DR that typically involves replication and allows a user to fail over to virtualized workloads.

virtual disk - A virtual hard drive file is a container file that acts similar to a physical hard drive.

virtual drive - A virtual hard drive file is a container file that acts similar to a physical hard drive.

Virtual Earth - Virtual Earth is a Web-based, interactive geographical guide that allows users to search and observe maps and aerial photographs of specific areas, neighborhoods, and points of interest on the earth's surface.

virtual embodiment - Virtual embodiment is the perception of sensory feedback related to an individual’s virtual, non- physical body (also known as an avatar) and the effect it has on the individual’s cognition.

Virtual File Allocation Table - Virtual File Allocation Table (VFAT) is the part of the Windows 95 and later operating system that handles long file names, which otherwise could not be handled by the original file allocation table file allocation table (FAT) programming.

Virtual File Allocation Table (VFAT) - Virtual File Allocation Table (VFAT) is the part of the Windows 95 and later operating system that handles long file names, which otherwise could not be handled by the original file allocation table file allocation table (FAT) programming.

virtual file system (VFS) - A virtual file system (VFS) is programming that forms an interface between an operating system's kernel and a more concrete file system.

virtual firewall - A virtual firewall is a firewall device or service that provides network traffic filtering and monitoring for virtual machines (VMs) in a virtualized environment.

virtual floppy disk - A virtual floppy disk is an alternative to the traditional floppy that exists as a file rather than a physical medium.

virtual GPU (vGPU) - A virtual GPU is a computer processor that renders graphics on a server rather than on a physical endpoint device.

virtual hard disk - Virtual hard disk (VHD) is a disk image file format for storing the complete contents of a hard drive.

virtual hard disk (VHD) - Virtual hard disk (VHD) is a disk image file format for storing the complete contents of a hard drive.

virtual hard drive - A virtual hard drive file is a container file that acts similar to a physical hard drive.

Virtual Home Environment - In mobile computing, the Virtual Home Environment (VHE) is the concept that a network supporting mobile users should provide them the same computing environment on the road that they have in their home or corporate computing environment.

Virtual Home Environment (VHE) - In mobile computing, the Virtual Home Environment (VHE) is the concept that a network supporting mobile users should provide them the same computing environment on the road that they have in their home or corporate computing environment.

virtual honeynet - A honeynet is a network set up with intentional vulnerabilities; its purpose is to invite attack, so that an attacker's activities and methods can be studied and that information used to increase network security.

virtual honeypot - A virtual honeypot is software that emulates a vulnerable system or network to attract intruders and study their behavior.

virtual hosting - On the Internet, virtual hosting is the provision of Web server hosting services so that a company (or individual) doesn't have to purchase and maintain its own Web server and connections to the Internet.

virtual human - CAVEman is an interactive, object-oriented model of a human body consisting of over 3,000 anatomically correct, catalogued and computerized body parts.

Virtual Instrument file - Virtual Instrument file is used by National Instruments' LabVIEW development software.

Virtual Instrument file (vi or .vi) - Virtual Instrument file is used by National Instruments' LabVIEW development software.

virtual internet service provider - A virtual ISP (virtual Internet service provider, sometimes abbreviated as VISP or vISP) is a company that offers Internet services under its own company or brand name, while actually using the equipment and facilities of another ISP to provide those services.

virtual ISP - A virtual ISP (virtual Internet service provider, sometimes abbreviated as VISP or vISP) is a company that offers Internet services under its own company or brand name, while actually using the equipment and facilities of another ISP to provide those services.

virtual ISP (virtual Internet service provider, VISP or vISP) - A virtual ISP (virtual Internet service provider, sometimes abbreviated as VISP or vISP) is a company that offers Internet services under its own company or brand name, while actually using the equipment and facilities of another ISP to provide those services.

virtual keyboard - A virtual keyboard is a computer keyboard that a user operates by typing on or within a wireless- or optical-detectable surface or area rather than by depressing physical keys.

virtual kill switch - A kill switch in an IT context is a mechanism used to shut down or disable a device or program.

virtual LAN - A VLAN (virtual LAN) is a subnetwork which can group together collections of devices on separate physical local area networks (LANs).

virtual learning environment - A virtual learning environment (VLE) is a set of teaching and learning tools designed to enhance a student's learning experience by including computers and the Internet in the learning process.

virtual learning environment (VLE) or managed learning environment (MLE) - A virtual learning environment (VLE) is a set of teaching and learning tools designed to enhance a student's learning experience by including computers and the Internet in the learning process.

Virtual Lifetime Electronic Record - Virtual Lifetime Electronic Record (VLER) is an electronic health record program that tracks the medical history of American soldiers through their entire service, from active duty to veteran status.

Virtual Lifetime Electronic Record (VLER) - Virtual Lifetime Electronic Record (VLER) is an electronic health record program that tracks the medical history of American soldiers through their entire service, from active duty to veteran status.

Virtual Local Area Network - A VLAN (virtual LAN) is a subnetwork which can group together collections of devices on separate physical local area networks (LANs).

virtual local area network�hopping - VLAN hopping (virtual local area network hopping) is a method of attacking a network by sending packets to a port at a network end point that is not normally accessible to the sender.

virtual LUN or thin LUN - A virtual LUN (virtual logical unit number) is a representation of a storage area that is not tied to any physical storage allocation.

virtual machine - VM (Virtual Machine), currently embodied in a product called VM/ESA, is a widely-installed operating system for mainframes from IBM that can host other operating systems, including MVS and Conversational Monitor System (CMS), so that each of the operating systems seems to have its own complete system of software and hardware resources (data storage, telecommunications, processor, and so forth).

virtual machine - A virtual machine (VM) is an operating system (OS) or application environment that is installed on software, which imitates dedicated hardware.

virtual machine (VM) - A virtual machine (VM) is an operating system (OS) or application environment that is installed on software, which imitates dedicated hardware.

virtual machine configuration - Virtual machine configuration is the arrangement of resources assigned to a virtual machine.

virtual machine escape - Virtual machine escape is an exploit in which the attacker runs code on a VM that allows an operating system running within it to break out and interact directly with the hypervisor.

Virtual Machine File System - VMware VMFS (Virtual Machine File System) is a cluster file system that facilitates storage virtualization for multiple installations of VMware ESX Server, a hypervisor that partitions physical servers into multiple virtual machines.

virtual machine lifecycle management (VMLM) - Virtual machine lifecycle management is a set of processes designed to help administrators oversee the implementation, delivery, operation, and maintenance of virtual machines (VMs) over the course of their existence.

Virtual Machine Management Service - Virtual Machine Management Service, also known as VMMS or vmms.

virtual machine monitor - A virtual machine monitor (VMM) is a host program that allows a single computer to support multiple, identical execution environments.

virtual machine replication - Virtual machine replication is a process used by information technology (IT) professionals to create backup versions of virtual machines (VMs) The backup can be kept and used to restore the machine in the event that its data is corrupted or lost.

virtual machine snapshot - A virtual machine snapshot is a file-based representation of the state of a virtual machine at a given time.

virtual manufacturing - Virtual manufacturing (VM) is the use of computers to model, simulate and optimize the critical operations and entities in a factory plant.

virtual meeting room - A virtual meeting room is a cloud-based collaboration space that allows people in disparate geographical locations to meet in real time.

virtual memory - Virtual memory is a memory management technique where secondary memory can be used as if it were a part of the main memory.

virtual memory ballooning - Virtual memory ballooning allows a physical host to recapture unused memory on its guest virtual machines and allocate the resource where needed.

Virtual Memory System - VMS (Virtual Memory System) is an operating system from the Digital Equipment Corporation (DEC) that runs in its older mid-range computers.

virtual microscopy - Virtual microscopy is a method of posting microscope images on, and transmitting them over, computer networks.

virtual mobile infrastructure (VMI) - Virtual mobile infrastructure (VMI) is a delivery platform which does not require an application or operating system (OS) to run locally on a mobile device.

virtual NAS - Virtual NAS is a virtual machine (VM) that acts as a file server for network-attached storage (NAS).

virtual network adapter - A virtual network adapter is a program (instead of a physical network adapter) that allows a computer to connect to a network.

virtual network computing - Virtual network computing (VNC) is a type of remote-control software that makes it possible to control another computer over a network connection.

virtual network computing (VNC) - Virtual network computing (VNC) is a type of remote-control software that makes it possible to control another computer over a network connection.

virtual network functions (VNF) - Virtual network functions (VNFs) are virtualized tasks formerly carried out by proprietary, dedicated hardware.

virtual networking - Virtual networking is a technology that facilitates the control of one or more remotely located computers or servers over the Internet.

virtual organization - A virtual organization or company is one whose members are geographically apart, usually working by computer e-mail and groupware while appearing to others to be a single, unified organization with a real physical location.

virtual patching - Virtual patching is the quick development and short-term implementation of a security policy meant to prevent an exploit from occurring as a result of a newly discovered vulnerability.

virtual payment terminal - Virtual terminals allow sellers to take credit card payments online for orders made online or over the phone without requiring a card reader device.

Virtual PC - Virtual PC is a program that emulates Windows 95, Windows 98, Windows NT, as well as IBM OS/2, or Linux on a Macintosh personal computer, assuming it's equipped with a sufficiently fast microprocessor.

virtual phone number - A virtual phone number is a telephone number is used to route calls to the user's actual phone number or numbers.

virtual power plant - A virtual power plant is the combination of numerous solar-powered, battery-backed homes delivering excess power back into the grid to provide power for other locations.

virtual presence - Virtual presence is the ability of a user to feel that they are actually in a virtual location such as a web site or an immersive simulation using technologies like virtual reality (VR) or augmented reality (AR).

virtual printer - A virtual printer is an application that replicates the software interface for a physical printer to facilitate various tasks without actually printing anything.

virtual private cloud (VPC) - A virtual private cloud (VPC) is the logical division of a service provider's public cloud multi-tenant architecture to support private cloud computing.

virtual private database - A Virtual Private Database (VPD) makes the database tables seem like they belong to one user when multiple users may actually be using that table.

virtual private database (VPD) - A Virtual Private Database (VPD) makes the database tables seem like they belong to one user when multiple users may actually be using that table.

virtual private LAN service - Virtual private LAN service (VPLS) is a technology that makes it possible to connect geographically dispersed local area networks (LANs) logically over the Internet.

virtual private LAN service (VPLS) - Virtual private LAN service (VPLS) is a technology that makes it possible to connect geographically dispersed local area networks (LANs) logically over the Internet.

virtual private network - A virtual private network (VPN) is a service that creates a safe, encrypted online connection.

virtual private network appliance - A VPN (virtual private network) appliance is a network device equipped with enhanced security features.

virtual private server - A virtual private server (VPS), also called a virtual dedicated server (VDS), is a virtual server that appears to the user as a dedicated server, but that is actually installed on a computer serving multiple websites.

virtual private server (VPS) or virtual dedicated server (VDS) - A virtual private server (VPS), also called a virtual dedicated server (VDS), is a virtual server that appears to the user as a dedicated server, but that is actually installed on a computer serving multiple websites.

virtual provisioning - Virtual provisioning is a term used by vendors, such as EMC, to describe a process of efficiently provisioning space in storage area networks (SAN).

virtual reality - Virtual reality is an artificial environment that is created with software and presented to the user in such a way that the user suspends belief and accepts it as a real environment.

virtual reality cloud (VR cloud) - Virtual reality cloud is the application of cloud computing to create VR environments and experiences.

virtual reality gaming (VR gaming) - At its simplest, a VR game might involve a 3-D image that can be explored interactively on a computing device by manipulating keys, mouse or touchscreen.

Virtual Reality Modeling Language - VRML (Virtual Reality Modeling Language) is a language for describing three-dimensional (3-D) image sequences and possible user interactions to go with them.

virtual reality sickness (VR motion sickness) - Virtual reality sickness (VR motion sickness) is the physical discomfort that occurs when an end user's brain receives conflicting signals about self-movement in a digital environment.

virtual reality therapy (VR therapy) - Virtual reality therapy (VR therapy) is the use of simulated interactive and immersive environments as a tool for physical or psychological healthcare applications.

virtual reality-based training (VRBT) - Virtual reality-based training (VRBT) is an interactive and immersive teaching method that employs technology to provide virtual scenarios to simulate situations that might occur in actual settings.

virtual rep - A virtual agent (sometimes called an intelligent virtual agent, virtual rep or chatbot) is a software program that uses scripted rules and, increasingly, artificial intelligence applications to provide automated service or guidance to humans.

Virtual Router Redundancy - VRRP (Virtual Router Redundancy Protocol) is an Internet protocol that provides a way to have one or more backup routers when using a statically configured router on a local area network (LAN).

Virtual Router Redundancy Protocol - VRRP (Virtual Router Redundancy Protocol) is an Internet protocol that provides a way to have one or more backup routers when using a statically configured router on a local area network (LAN).

virtual routing and forwarding - Virtual routing and forwarding (VRF) is a technology included in IP (Internet Protocol) network routers that allows multiple instances of a routing table to exist in a router and work simultaneously.

virtual routing and forwarding (VRF) - Virtual routing and forwarding (VRF) is a technology included in IP (Internet Protocol) network routers that allows multiple instances of a routing table to exist in a router and work simultaneously.

virtual SAN appliance - A virtual SAN appliance (VSA) is a software bundle that allows a storage manager to turn the unused storage capacity in his network's virtual servers into a storage area network (SAN).

virtual SAN appliance (VSA) - A virtual SAN appliance (VSA) is a software bundle that allows a storage manager to turn the unused storage capacity in his network's virtual servers into a storage area network (SAN).

virtual server - On the Internet, a virtual server is a server (computer and various server programs) at someone else's location that is shared by multiple Web site owners so that each owner can use and administer it as though they had complete control of the server.

virtual server backup - Virtual server backup is the copying of data stored on a virtual server to guard against data loss.

virtual server farm - A virtual server farm is a networking environment that employs multiple application and infrastructure servers running on two or more physical servers using a server virtualization program such as VMware or Microsoft Virtual Server.

virtual storage - Virtual storage is the pooling of physical storage from multiple network storage devices into what appears to be a single storage device that is managed from a central console.

Virtual Storage Access Method - VSAM (Virtual Storage Access Method ) is a file management system for IBM's larger operating systems, including its primary mainframe operating system, MVS, now called OS/390.

virtual storage appliance (VSA) - A virtual storage appliance (VSA) is a storage controller that runs on a virtual machine(VM) to create shared storage without the cost of additional hardware.

virtual storage area network - A virtual storage area network (VSAN) is a logical partition in a physical storage area network (SAN).

virtual storage area network (VSAN) - A virtual storage area network (VSAN) is a logical partition in a physical storage area network (SAN).

Virtual Storage Portal - Another meaning for VSP is vertical solutions provider.

Virtual Storage Portal (VSP) - Another meaning for VSP is vertical solutions provider.

virtual switch - A virtual switch is a software program that allows one virtual machine (VM) to communicate with another.

virtual symmetric multiprocessing - VSMP (virtual symmetric multiprocessing) is a method of SMP (symmetric multiprocessing) in which two or more virtual processors are mapped inside a single virtual machine or partition.

virtual systems management - Virtual systems management (VSM), also known as virtual system management, is the process of remotely managing the allocation and use of resources in conventional networks as well as in virtual area networks (VANs), virtual private networks (VPNs), virtual network computing (VNC) and virtual servers.

virtual systems management (VSM) - Virtual systems management (VSM), also known as virtual system management, is the process of remotely managing the allocation and use of resources in conventional networks as well as in virtual area networks (VANs), virtual private networks (VPNs), virtual network computing (VNC) and virtual servers.

virtual tape - Virtual tape is an archival storage technology that makes it possible to save data as if it were being stored on tape although it may actually be stored on hard disk or on another storage medium.

virtual tape library (VTL) - A virtual tape library (VTL) is a storage system consisting of hard disk drives (HDDs) that looks and acts like a physical tape library.

virtual tape system - Virtual tape is an archival storage technology that makes it possible to save data as if it were being stored on tape although it may actually be stored on hard disk or on another storage medium.

Virtual Telecommunications Access Method - VTAM (Virtual Telecommunications Access Method) is an IBM application program interface (API) for communicating with telecommunication devices and their users.

virtual to physical - Virtual to physical (V2P) is a term that refers to the migration of an operating system (OS), application programs and data from a virtual machine or disk partition to a computer's main hard disk.

virtual to physical (V2P) - Virtual to physical (V2P) is a term that refers to the migration of an operating system (OS), application programs and data from a virtual machine or disk partition to a computer's main hard disk.

Virtual to virtual - Virtual to virtual (V2V) is a term that refers to the migration of an operating system (OS), application programs and data from a virtual machine or disk partition to another virtual machine or disk partition.

Virtual to virtual (V2V) - Virtual to virtual (V2V) is a term that refers to the migration of an operating system (OS), application programs and data from a virtual machine or disk partition to another virtual machine or disk partition.

virtual trade shows - A virtual trade show is an online version of an event at which goods and services for a specific industry are exhibited and demonstrated.

VirtualCenter - VMware vCenter Server is the centralized monitoring and resource management software for VMware vSphere virtual infrastructure.

virtuality continuum - The virtuality continuum is the range of technologies integrating digital content into the user’s physical reality.

virtualization - Virtualization is the creation of a virtual -- rather than actual -- version of something, such as an operating system (OS), a server, a storage device or network resources.

Virtualization 101 - Test your knowledge of the fundamentals of virtualization in the this quiz from expert Anil Desai.

virtualization administrator - A virtualization administrator is an employee whose responsibilities include virtual environment set up and maintenance, in addition to traditional sysadmin duties.

virtualization architecture - A virtualization architecture is a conceptual model specifying the overall structure, logical components and interrelationships of the elements involved in delivering a virtual -- rather than physical -- version of something, such as an operating system (OS), a server, a storage device or network resources.

virtualization manager - A hypervisor is a function that abstracts -- isolates -- operating systems (OSes) and applications from the underlying computer hardware.

Virtualization Quizzes - We've gathered a collection of our quizzes about virtualization-related topics.

virtualization sprawl (VM sprawl) - Virtualization sprawl is a phenomenon that occurs when the number of virtual machines (VMs) on a network reaches a point where administrators can no longer manage them effectively.

virtualization stack - A virtualization stack is the collection of resources that, along with the hypervisor, make up the Microsoft Hyper-V environment.

Virtualization Technology - Intel VT (Virtualization Technology) is the company's hardware assistance for processors running virtualization platforms.

virtualization-based security (VBS) - Virtualization-based security (VBS) is technology that abstracts computer processes from the underlying operating system and, in some cases, hardware.

virtue signaling - Virtue signaling is making a public statement that specifies or implies laudable behavior or attitudes which may not correspond to the actions of the person making the statement.

Virtuozzo - Virtuozzo is a software application for enterprise server virtualization that allows an administrator to create virtual environments on a host computer at the operating system (OS) layer.

virus (computer virus) - A computer virus is malicious code that replicates by copying itself to another program, computer boot sector or document and changes how a computer works.

virus hoax - A virus hoax is a false warning about a computer virus.

virus kit - A phishing kit is a collection of tools assembled to make it easier for people with little technical skill to launch a phishing exploit.

virus signature (virus definition) - A virus signature (also known as a virus definition) is a file or multiple files that are downloaded by a security program to identify a computer virus.

virus throttling - Throttled data transfer, also known as data transfer throttling or lean data transfer, is the deliberate regulation of the data transfer rate in a communications system.

viseme - A viseme is a generic facial image that can be used to describe a particular sound.

vishing - Vishing (voice or VoIP phishing) is an electronic fraud tactic in which individuals are tricked over the phone into revealing critical financial or personal information to unauthorized entities.

vishing (voice or VoIP phishing) - Vishing (voice or VoIP phishing) is an electronic fraud tactic in which individuals are tricked over the phone into revealing critical financial or personal information to unauthorized entities.

visible light communication (VLC) - Visible light communication (VLC) is the use of visible light as a method of wirelessly transmitting data.

VisiCalc - VisiCalc was the original computer spreadsheet program.

Visier - Cloud-based vendor Visier sells software for workforce analytics and workforce planning.

vision statement - A vision statement is an organization's declaration of its mid-term and long-term goals, stating what they want to become in the future.

vision-correcting display - A vision-correcting display distorts the images on users' screens according to algorithms based on their prescriptions for eyeglasses.

visit - In tabulating statistics for Web site usage, a user session (sometime referred to as a visit) is the presence of a user with a specific IP address who has not visited the site recently (typically, anytime within the past 30 minutes).

visitor based networking - Visitor-based networking (VBN) is the provision of high-speed Internet access for mobile PC users in need of temporary service in public places.

visitor-based networking - Visitor-based networking (VBN) is the provision of high-speed Internet access for mobile PC users in need of temporary service in public places.

visitor-based networking (VBN) - Visitor-based networking (VBN) is the provision of high-speed Internet access for mobile PC users in need of temporary service in public places.

Visor - Visor is the trade name of a handheld computer manufactured by Handspring.

VISP - A virtual ISP (virtual Internet service provider, sometimes abbreviated as VISP or vISP) is a company that offers Internet services under its own company or brand name, while actually using the equipment and facilities of another ISP to provide those services.

Vista - Vista, formerly code named Longhorn, isa Microsoft Windows desktop operating systems.

VistA EHR - VistA EHR, more formally known as the VistA Computerized Patient Record System, is an open source electronic health record (EHR) system developed by the United States Department of Veterans Affairs (VA).

visual analytics - Visual analytics is a form of inquiry in which data that provides insight into solving a problem is displayed in an interactive, graphical manner.

Visual Basic - Visual Basic (VB) is an event-driven programming language and environment from Microsoft that provides a graphical user interface (GUI) which allows programmers to modify code by simply dragging and dropping objects and defining their behavior and appearance.

Visual Basic (VB) - Visual Basic (VB) is an event-driven programming language and environment from Microsoft that provides a graphical user interface (GUI) which allows programmers to modify code by simply dragging and dropping objects and defining their behavior and appearance.

Visual Basic .NET - Visual Basic .

Visual Basic .NET (VB.NET or VB .NET) - Visual Basic .

visual basic net - Visual Basic .

visual computing - Visual computing is computing that lets you interact with and control work by manipulating visual images either as direct work objects or as objects representing other objects that are not necessarily visual themselves.

visual display - VDT (video display terminal, or sometimes visual display terminal) is a term used, especially in ergonomic studies, for the computer display.

visual display terminal - VDT (video display terminal, or sometimes visual display terminal) is a term used, especially in ergonomic studies, for the computer display.

Visual InterDev - Visual InterDev is Microsoft's development tool for building a dynamic, data-driven Web site.

Visual J - Visual J# (sometimes known as just J#) is a set of programmming tools that allow developers to use the Java programming language to write applications that will run on Microsoft's .

Visual Studio .NET - Visual Studio .

Visual Studio Express - Visual Studio Express (VSE) is a freeware version of Microsoft's Visual Studio development environment toolset.

Visual Studio Express (VSE) - Visual Studio Express (VSE) is a freeware version of Microsoft's Visual Studio development environment toolset.

Visual Studio Team System - Visual Studio Team Services (VSTS) -- rebranded as Azure DevOps in 2018 -- is an Azure cloud-hosted extension of Microsoft's Team Foundation Server (TFS) -- now called Azure DvOps -- that assist development teams with special tools and services for software programmers, analysts and testers as well as IT project or team managers.

Visual Studio Tools for Office - VSTO, or Visual Studio Tools for Office, or Microsoft Visual Studio Tools is part of Microsoft's Visual Studio.

Visualforce - Visualforce is a component-based user interface (UI) framework that enables the creation of dynamic, reusable user interfaces.

visualization - Visualization is the process of representing abstract business or scientific data as images that can aid in understanding the meaning of the data.

Vital Product Data - VPD (vital product data) is information about a device that is stored on a computer's hard disk (or the device itself) that allows the device to be administered at a system or network level.

VITC - Vertical interval time code (abbreviated VITC and sometimes pronounced VIHT-see) is a timing signal that is part of a video recording.

vixel - A vertical cavity surface emitting laser (VCSEL) is a specialized laser diode that promises to revolutionize fiber optic communications by improving efficiency and increasing data speed.

VK - A virtual keyboard is a computer keyboard that a user operates by typing on or within a wireless- or optical-detectable surface or area rather than by depressing physical keys.

VK - VKontakte (VK) is Europe's largest social networking website, with more than 100 million users.

VKontakte - VKontakte (VK) is Europe's largest social networking website, with more than 100 million users.

VKontakte (VK) - VKontakte (VK) is Europe's largest social networking website, with more than 100 million users.

VLAN - A VLAN (virtual LAN) is a subnetwork which can group together collections of devices on separate physical local area networks (LANs).

VLAN (virtual LAN) - A VLAN (virtual LAN) is a subnetwork which can group together collections of devices on separate physical local area networks (LANs).

VLAN hopping - VLAN hopping (virtual local area network hopping) is a method of attacking a network by sending packets to a port at a network end point that is not normally accessible to the sender.

VLAN hopping (virtual local area network hopping) - VLAN hopping (virtual local area network hopping) is a method of attacking a network by sending packets to a port at a network end point that is not normally accessible to the sender.

VLDB - While there is apparently no official or standard definition for the term Very Large Database (VLDB), it is sometimes used to describe databases occupying magnetic storage in the terabyte range and containing billions of table rows.

VLE - A virtual learning environment (VLE) is a set of teaching and learning tools designed to enhance a student's learning experience by including computers and the Internet in the learning process.

VLER - Virtual Lifetime Electronic Record (VLER) is an electronic health record program that tracks the medical history of American soldiers through their entire service, from active duty to veteran status.

VLIW - Very long instruction word (VLIW) describes a computer processing architecture in which a language compiler or pre-processor breaks program instruction down into basic operations that can be performed by the processor in parallel (that is, at the same time).

VLIW (very long instruction word) - Very long instruction word (VLIW) describes a computer processing architecture in which a language compiler or pre-processor breaks program instruction down into basic operations that can be performed by the processor in parallel (that is, at the same time).

vlog - A vlog (or video blog) is a blog that contains video content.

vlog (video blog) - A vlog (or video blog) is a blog that contains video content.

vlogging - A vlog (or video blog) is a blog that contains video content.

VLSI - VLSI (very large-scale integration) is the current level of computer microchip miniaturization and refers to microchips containing in the hundreds of thousands of transistor s.

VLSM - Definition: Learn what a variable-length subnet mask (VLSM) is and how it allows network engineers to reduce the number of wasted IP addresses in each subnet.

VM - VM (Virtual Machine), currently embodied in a product called VM/ESA, is a widely-installed operating system for mainframes from IBM that can host other operating systems, including MVS and Conversational Monitor System (CMS), so that each of the operating systems seems to have its own complete system of software and hardware resources (data storage, telecommunications, processor, and so forth).

VM - A virtual machine (VM) is an operating system (OS) or application environment that is installed on software, which imitates dedicated hardware.

VM automation - VM automation is the ability for a virtual machine (VM) to perform basic functions and optimize performance on its own or with minimal manual input.

VM BIOS (virtual machine basic input/output system) - A VM BIOS (virtual machine basic input/output system) is the set of instructions that controls the booting process of a virtual machine.

VM hardware version (virtual machine hardware version) - The VM hardware version (virtual machine hardware version) designates the virtual hardware functions supported by a virtual machine (VM), which relates to the hardware on the host server.

VM stall - VM stall is the point where it becomes just as cost-effective to deploy a physical server as it is to deploy a virtual server.

VMDK file (virtual machine disk file) - VMware Virtual Machine Disk File (VMDK) is a format specification for virtual machine (VM) files.

VMEbus - VMEbus (VersaModular Eurocard bus) is a bus (computer data path) system, designed by Motorola, Signetics, Mostek, and Thompson CSF, that is used in industrial, commercial, and military applications worldwide.

VMEbus (VersaModular Eurocard bus) - VMEbus (VersaModular Eurocard bus) is a bus (computer data path) system, designed by Motorola, Signetics, Mostek, and Thompson CSF, that is used in industrial, commercial, and military applications worldwide.

VMI - Vendor-managed inventory (VMI) is an inventory management technique in which a supplier of goods, usually the manufacturer, is responsible for optimizing the inventory held by a distributor.

VMkernel - VMkernel is a POSIX-like operating system developed by VMware.

vmkfstools - Vmkfstools is an ESXi Shell command line interface (CLI) for building and managing volumes and virtual disks on an ESX/ESXi host.

vmkping - Vmkping is a command used to verify and troubleshoot VMkernel network connectivity.

VML - Vector graphics rendering, sometimes abbreviated VML, refers to scalable vector graphics (SVG) used in Web pages.

VML - Vector Markup Language (VML) is an XML-based language that facilitates the use of vector graphics on the Internet, especially on Web sites.

VMM - A virtual machine monitor (VMM) is a host program that allows a single computer to support multiple, identical execution environments.

VMO - A vendor management office (VMO) is an internal unit within an enterprise that is charged with evaluating third-party providers of goods and services, supervising day-to-day interactions and managing longer-term relationships.

VMQ (Virtual Machine Queue) - VMQ (Virtual Machine Queue) is a type of hardware packet filtering that delivers packet data from an outside virtual machine network directly to a virtualized host operating system.

VMS - VMS (Virtual Memory System) is an operating system from the Digital Equipment Corporation (DEC) that runs in its older mid-range computers.

VMS (Virtual Memory System) - VMS (Virtual Memory System) is an operating system from the Digital Equipment Corporation (DEC) that runs in its older mid-range computers.

VMUG (VMware User Group) - A VMUG (VMware User Group) is an international community of VMware users whose goal is to share knowledge.

VMUG Advantage (VMware User Group Advantage) - VMUG Advantage is a subscription-based membership offered by VMware User Group (VMUG).

VMware - VMware is a virtualization and cloud computing software provider based in Palo Alto, Calif.

VMware Access Point - VMware Access Point is a virtual appliance used as a secure gateway which authorized users can access VMware computing resources.

VMware AirWatch - VMware AirWatch is an enterprise mobility software provider based in Atlanta.

VMware AirWatch - VMware AirWatch is an enterprise mobility software provider based in Atlanta.

VMware AirWatch Secure Content Locker - VMware's Secure Content Locker is a tool within the company's AirWatch mobile device management product suite that enables secure data access and collaboration for on-site and remote workers.

VMware App Volumes (formerly CloudVolumes) - VMware App Volumes (formerly CloudVolumes) is layering software that puts applications into compartments for easier deployment in a virtual desktop infrastructure environment.

VMware AppDefense - VMware AppDefense is a data center security service designed to protect virtualized applications running in an enterprise data center in order to improve the protection and threat response performance of an enterprise security operations center (SOC).

VMware backup - VMware backup is the copying of data on a virtual machine (VM) in a VMware environment to prevent data loss.

VMware Blast Extreme - VMware Blast Extreme is a remote display protocol designed to deliver graphics-intensive virtual workloads using the H.

VMware Capacity Planner (VCP) - VMware Capacity Planner is a tool that collects information on an IT infrastructure's resource usage and compares it to industry-average data.

VMware Certificate Authority (VMCA) - The VMware Certificate Authority (VMCA) is the default root certificate authority introduced in vSphere 6.

VMware Certified Associate - VMware Certified Associate (VCA) is VMware's entry-level cloud and virtualization certification.

VMware Certified Implementation Expert (VCIX) - The VMware Certified Implementation Expert (VCIX) is third-highest level in VMware's data center virtualization, cloud management and automation, desktop and mobility, and network virtualization certification tracks.

VMware Certified Professional (VCP) - VMware Certified Professional (VCP) is a certification designed to demonstrate technical competency with VMware vSphere and related technologies.

VMware Cloud Foundation - VMware Cloud Foundation is an integrated software stack that uses SDDC Manager -- an automated lifecycle management tool -- to bundle compute (vSphere), storage (VMware vSAN) and network virtualization (NSX) into a single platform that can deployed on premises as a private cloud or run as a service within a public cloud.

VMware Cloud on AWS - VMware Cloud on AWS is a hybrid cloud service that runs the VMware software-defined data center (SDDC) stack in the AWS public cloud.

VMware Compatibility Guide - The VMware Compatibility Guide is an online reference site hosted by VMware that shows what various hardware, converged systems, operating systems, third-party applications and VMware products are compatible with a specific version of a VMware software product.

VMware Converter - VMware Converter is a utility that facilitates the creation of VMware virtual machines from physical systems or virtual machines associated with third-party vendors.

VMware Cross vCenter vMotion - VMware Cross vCenter vMotion is a feature introduced in vSphere 6.

VMware CTK file - A VMware CTK file contains a list of all the changes made to a VMware virtual machine (VM) since it was last backed up.

VMware DirectPath I/O - VMware DirectPath I/O is the technology that gives a virtual machine (VM) direct access to a physical PCI and PCIe hardware devices on the host by circumventing the hypervisor.

VMware DRS - VMware DRS (Distributed Resource Scheduler) is a utility that balances computing workloads with available resources in a virtualized environment.

VMware DRS (Distributed Resource Scheduler) - VMware DRS (Distributed Resource Scheduler) is a utility that balances computing workloads with available resources in a virtualized environment.

VMware ESXi - VMware ESXi is an operating system-independent hypervisor based on the VMkernel operating system that interfaces with agents that run on top of it.

VMware EVALExperience - VMware EVALExperience is a new subscription program provided by VMware and VMUG to give users year-long trial access to popular VMware data center products.

VMware EVC (VMware Enhanced vMotion compatibility) - VMware EVC (VMware Enhanced vMotion Compatibility) is a feature in VMware vSphere virtualization that allows virtual machines (VMs) to move between ESX/ESXi hosts on different CPUs.

VMware EVO:RAIL - VMware EVO:RAIL is a set of hyper-converged infrastructure appliances VMware sold with hardware partners from 2014 to 2016.

VMware fling - A VMware fling is an unsupported software tool created by a VMware engineer.

VMware Fusion - VMware Fusion is virtualization software from VMware that can run more than 150 multiple guest operating systems (OS), such as Windows or Linux, as virtual machines (VMs) inside a Macintosh OS.

VMware HA - VMware vSphere HA (High Availability) is a utility included in VMware's vSphere software that can restart failed virtual machines (VMs) on alternative host servers to reduce application downtime.

VMware Horizon Air - VMware Horizon Air allows IT administrators to deliver cloud-based virtual desktops and applications to users on any device or on a Web browser.

VMware Horizon Application Manager - VMware Horizon Application Manager, also known as Horizon App Manager, is an enterprise service for managing access to software.

VMware Horizon Client - VMware Horizon Client is software that IT or users install on endpoint devices to connect with Horizon View virtual desktops and applications running on vSphere ESXi servers in a company's data center.

VMware Horizon Cloud Pod Architecture - VMware Horizon Cloud Pod Architecture is a feature in VMware Horizon 6 that consolidates multiple Horizon View pods to centralize management for administrators and enable entitlement access for remote users.

VMware Horizon FLEX - VMware Horizon FLEX is a desktop virtualization product that allows IT administrators to deliver virtual desktops to Windows and Mac endpoints.

VMware Horizon Mirage - VMware Horizon Mirage is a desktop management tool that centrally manages physical and virtual desktop images.

VMware Horizon Mobile - VMware Horizon Mobile is mobile virtualization and application wrapping software that lets IT administrators control corporate data and applications on end users' smartphones and tablets.

VMware Horizon Suite - VMware Horizon Suite is a collection of products and technologies designed to help information technology (IT) administrators deliver desktops and applications and secure data on a variety of endpoint devices.

VMware Horizon View - VMware Horizon View is the virtual desktop host platform for vSphere.

VMware Horizon View Composer - VMware Horizon View Composer is a feature in Horizon View that gives administrators the ability to manage pools of desktops that share a common virtual disk.

VMware Horizon Workspace - VMware Horizon Workspace is enterprise mobility management software that creates a central repository where users can access corporate data, applications and virtual desktops from a variety of endpoint devices.

VMware host profile - VMware Host Profiles is a vCenter Server tool to design and deploy ESX/ESXi hosts.

VMware Identity Manager - VMware Identity Manager is an Identity as a Service (IDaaS) offering that provides single sign-on (SSO) capabilities and user-based controls for web, cloud and mobile applications.

VMware Infrastructure 3 - VMware Infrastructure 3 (VI3) is a software suite designed to centralize and optimize desktop management and data center resources through virtualization.

VMware Infrastructure 3 (VI3) - VMware Infrastructure 3 (VI3) is a software suite designed to centralize and optimize desktop management and data center resources through virtualization.

VMware Instant Clone (VM Fork) - VMware Instant Clone is a feature within vSphere that enables an administrator to rapidly clone, or fork, an existing virtual machine.

VMware Integrated OpenStack (VMware VIO) - VMware Integrated OpenStack (VMware VIO) is an OpenStack distribution tested and supported by VMware for companies that want to deploy and manage a private cloud on top of their vSphere infrastructure.

VMware IT Business Management Suite (ITBM) - VMware IT Business Management Suite (ITBM) is a cost analysis and benchmarking product designed to detail the cost of IT services on a private cloud.

VMware Lab Manager - VMware Lab Manager is a software development and testing tool that enables designers and engineers to pool network and storage resources .

VMware long-distance vMotion - Long-distance vMotion is a feature that allows virtual machines to be migrated over long distances with a maximum round-trip latency time of 150 milliseconds.

VMware memory overcommit - Memory overcommit is the memory allocation feature for Vmware.

VMware NIC teaming (VMware network interface card teaming) - VMware NIC teaming is a way to group several network interface cards (NICs) to behave as one logical NIC.

VMware NSX - VMware NSX is a virtual networking and security software product family created from VMware's vCloud Networking and Security (vCNS) and Nicira's Network Virtualization Platform (NVP) intellectual property.

VMware Orchestrator - VMware Orchestrator is a free vCenter feature that helps automate VMware vCloud Suite, vSphere and other virtualization management system processes.

VMware OVF Tool (VMware Open Virtualization Format Tool) - The VMware OVF Tool is a command-line utility that allows administrators to import and export OVF packages to and from VMware products.

VMware Partner Network - The VMware Partner Network is a global channel partner program with benefits and support to provide VMware's virtualization and cloud technology.

VMware Photon Platform - VMware Photon Platform is a container runtime and set of management and security tools to deploy and manage a large-scale container deployment.

VMware PKS (VMware Pivotal Container Service) - VMware PKS (VMware Pivotal Container Service) is a managed container service that allows users to simplify, operate and manage Kubernetes clusters in multi-cloud environments.

VMware Platform Services Controller (PSC) - VMware Platform Services Controller (PSC) is a new service in vSphere 6 that handles the infrastructure security functions such as vCenter Single Sign-On, licensing, certificate management and server reservation.

VMware Project AppShift - VMware Project AppShift is technology designed to improve the experience of using virtualized Windows and its applications on non-Windows tablets.

VMware Project Bonneville - VMware Project Bonneville allows administrators to provision and manage containers through vSphere by hosting containers as VMs.

VMware Project Lightwave - VMware Project Lightwave is an open source project designed to improve container security and access control.

VMware Project Photon - VMware Project Photon is an open source project developed by VMware as a lightweight operating system for containers.

VMware resource pool - A VMware resource pool is the aggregated physical compute hardware -- CPU and memory, as well as other components -- allocated to virtual machines (VMs) in a VMware virtual infrastructure.

VMware Server - VMware Server is a virtualization solution that makes it possible to partition a single physical server into multiple virtual machines.

VMware Service Provider Program (VSPP) - The VMware Service Provider Program (VSPP) is part of the VMware Partner Network Program ,which allows service provider partners to host VMware software on a monthly subscription basis to offer cloud services such as Infrastructure as a Service (IaaS) and Platform as a Service (PaaS) to third parties.

VMware snapshot - A VMware snapshot is a copy of the virtual machine's disk file (VMDK) at a given point in time.

VMware Solution Exchange (VSX) - The VMware Solution Exchange (VSX) is an online marketplace where potential customers can browse, download and rate the products uploaded by developers and VMware partners.

VMware Storage Policy-Based Management - Storage Policy-Based Management is a feature that allows for automatic provisioning of virtual machines in a VMware environment.

VMware Technology Network (VMTN) - VMware Technology Network (VMTN) is a now defunct subscription service that offered evaluation versions of VMware software.

VMware template - A VMware template is a perfect, model copy of a virtual machine from which you can clone, convert or deploy more virtual machines.

VMware ThinApp - VMware ThinApp is an application virtualization tool included in VMware Inc.

VMware Tools - VMware Tools is an optional, free set of drivers and utilities that enhances both the performance of a virtual machine’s guest operating system and interaction between the guest and the host.

VMware UEM (User Environment Manager) - VMware User Environment Manager is software that IT professionals can use to configure and deploy employees' desktop computer settings.

VMware Unity mode - VMware Unity mode is a feature in VMware desktop virtualization products that allows a user to display applications from virtual machines (VMs) on the host system desktop.

VMware Unity Touch - VMware Unity Touch is software that offers a touch-based interface for navigating folders and launching applications when running Windows in a virtual machine on a smartphone or tablet.

VMware Update Manager - VMware Update Manager is a utility that oversees the installation of updates for existing installations of VMware ESX Server and guest operating systems.

VMware VADP (VMware vStorage API for Data Protection) - VMware VADP is a VMware vStorage API that backs up and restores vSphere virtual machines (VMs).

VMware vApp - A VMware vApp is a collection of virtual machines (VMs) and sometimes other vApps that host a multi-tier application, its policies and service levels.

VMware vCenter Chargeback Manager - VMware vCenter Chargeback Manager is a tool that calculates the costs of virtual resources and provides chargeback accountability.

VMware vCenter Infrastructure Navigator (VIN) - VMware vCenter Infrastructure Navigator (VIN) is a virtual appliance that finds and maps application dependencies to assist with troubleshooting and operational management in a vSphere environment.

VMware vCenter Mobile Access (VMware vCMA) - VMware vCenter Mobile Access (VMware vCMA) is a virtual appliance used by admins to manage a data center from mobile devices such as smartphones and tablets.

VMware vCenter Multi-Hypervisor Manager (MHM) - VMware vCenter Multi-Hypervisor Manager (MHM) is a free component of vCenter Standard Edition that provides support for multiple hypervisors in vCenter Server.

VMware vCenter Operations Management Suite - The VMware vCenter Operations Management Suite is a collection of infrastructure-management products for virtual data centers.

VMware vCenter Server (formerly VMware VirtualCenter) - VMware vCenter Server is the centralized monitoring and resource management software for VMware vSphere virtual infrastructure.

VMware vCenter Server Heartbeat (vCSHB) - VMware vCenter Server Heartbeat (vCSHB) is VMware's OEM version of NeverFail, which is designed to ensure the high availability and disaster recovery of vCenter Server whether on a LAN or a Wireless Wide Area Network.

VMware vCenter Server Linked Mode - VMware vCenter Server Linked Mode is a tool that allows administrators a consolidated view of management zones and allows servers to support an increased number of virtual machines.

VMware vCenter Simulator - VMware vCenter Simulator (VCSIM) is an unsupported tool from VMware that is included with the vCenter Server Appliance (vCSA) and is used to simulate changes in a vSphere environment for testing and development purposes.

VMware vCloud Air - VMware vCloud Air is an Infrastructure as a Service offering based on VMware’s vCenter.

VMware vCloud Air Hybrid Cloud Manager - VMware vCloud Air Hybrid Cloud Manager uses a network extension to allow users to manage both on and off-premises from a single interface.

VMware vCloud Connector - VMware vCloud Connector is a free product that allows an administrator on the vSphere platform to move virtual machines between servers, VMware public cloud providers and the vCloud Air service, through a single interface for private and public infrastructures.

VMware vCloud Director (VMware vCD) - VMware vCloud Director (vCD) is deployment, automation and management software for virtual infrastructure resources in multi-tenant cloud environments.

VMware vCloud Hybrid Service (vCHS) - VMware vCloud Hybrid Service (vCHS) is an Infrastructure as a Service (IaaS) offering based on the VMware vSphere hypervisor featuring three services -- dedicated cloud, virtual private cloud and Disaster Recovery as a Service (DRaaS) -- that can be managed with vCenter, vCloud Automation Center or vCloud Director.

VMware vCloud Suite - VMware vCloud Suite is a collection of applications built on VMware's vSphere platform for building a private cloud infrastructure.

VMware vExpert - VMware vExpert is an honorary title VMware grants to outstanding advocates of the company's products.

VMware vFabric Hyperic - VMware vFabric Hyperic is an agent-based monitoring system that automatically collects metrics on the performance and availability of hardware resources, operating systems, middleware and applications in physical, virtualized and cloud environments.

VMware vFRC (VMware vSphere Flash Read Cache) - VMware vFRC (VMware vSphere Flash Read Cache) is a feature that allows a virtualization host to use a local solid-state drive as a caching layer for virtual machines.

VMware View Persona Management - VMware View Persona Management is a feature in the Horizon View desktop virtualization platform that stores and delivers user-specific data and settings to a virtual desktop from a dedicated profile located in a remote repository.

VMware Virtual Machine File System - VMware VMFS (Virtual Machine File System) is a cluster file system that facilitates storage virtualization for multiple installations of VMware ESX Server, a hypervisor that partitions physical servers into multiple virtual machines.

VMware Virtual SAN Ready Node (vSAN Ready Node) - A VMware Virtual SAN Ready Node (vSAN Ready Node) is an original equipment manufacturer (OEM) network appliance that is certified to run VMware vSAN.

VMware Virtual SMP - VMware Virtual SMP is a utility that allows a single virtual machine to use two or more processors simultaneously.

VMware Virtual SMP (Symmetric Multi-Processing) - VMware Virtual SMP is a utility that allows a single virtual machine to use two or more processors simultaneously.

VMware vLockstep - VMware vLockstep is the technology supporting VMware's Fault Tolerance (FT) high-availability software feature.

VMware VMCI (VMware Virtual Machine Communication Interface) - VMware VMCI (Virtual Machine Communication Interface) is a high-speed interface that virtual machines (VMs) on the same host use to communicate with each other and the host kernel modules.

VMware VMFS - VMware VMFS (Virtual Machine File System) is a cluster file system that facilitates storage virtualization for multiple installations of VMware ESX Server, a hypervisor that partitions physical servers into multiple virtual machines.

VMware VMFS (Virtual Machine File System) - VMware VMFS (Virtual Machine File System) is a cluster file system that facilitates storage virtualization for multiple installations of VMware ESX Server, a hypervisor that partitions physical servers into multiple virtual machines.

VMware VMmark - VMware VMmark is a free benchmarking utility that runs several workloads to measure the performance and scalability of multiple hosts in a virtualized environment.

VMware vRealize Code Stream - VMware vRealize Code Stream is an automated DevOps tool in the vRealize Suite that uses a dashboard and controls to manage the delivery of an application from development to testing to publication.

VMware vRealize Log Insight (formerly vCenter Log Insight) - VRealize Log Insight is a log collection and analytics virtual appliance that enables administrators to collect, view, manage and analyze syslog data.

VMware vRealize Operations for Horizon - VMware vRealize Operations for Horizon is a monitoring tool that tracks the health and performance of Horizon, Citrix XenDesktop and XenApp, and Remote Desktop Session Host deployments.

VMware vRealize Suite - VMware vRealize Suite, formerly called vCenter Operations Management Suite, is a software platform designed to help IT administrators build and manage heterogeneous, hybrid clouds.

VMware vSAN (formerly Virtual SAN) - VMware vSAN (formerly Virtual SAN) is a hyper-converged, software-defined storage (SDS) product developed by VMware that pools together direct-attached storage devices across a VMware vSphere cluster to create a distributed, shared data store.

VMware vShield - VMware vShield is a group of networking and security products for virtualized IT infrastructures, comprising vShield Manager, vShield Edge, vShield Zones, vShield App, vShield Data Security and vShield Endpoint.

VMware vSphere - VMware vSphere -- formerly known as VMware Infrastructure -- is the brand name for VMware's suite of server virtualization products that includes its ESXi hypervisor and vCenter management software.

VMware vSphere 6 - VMware vSphere 6 is an enterprise-class virtualization platform intended to provision, manage, automate and pool the use of an organization’s virtualized computing resources.

VMware vSphere App HA - VMware vSphere App HA is virtual appliance introduced with vSphere 5.

VMware vSphere Big Data Extensions (BDE) - VMware vSphere Big Data Extensions (BDE) is a virtual appliance that enables administrators to deploy and manage the Hadoop clusters for big data analytics in the vSphere virtual infrastructure.

VMware vSphere Client - The VMware vSphere Client is a web-based application that connects to the vCenter Server so IT administrators can manage installations and handle inventory objects in a vSphere deployment.

VMware vSphere Content Library - The vSphere Content Library is a centralized repository in vSphere 6 to help manage and distribute virtual machines, templates, ISO images, scripts, vApps and other files related to virtual machines.

VMware vSphere Data Protection Advanced (VMware VDPA) - VMware vSphere Data Protection Advanced (VMware VDPA) is a backup management, recovery and replication utility for virtual machines and applications that is based on EMC Avamar deduplication technology.

VMware vSphere Distributed Switch (VMware vDS) - A VMware vSphere Distributed Switch (VMware vDS) allows a single virtual switch to connect multiple hosts in a cluster or multiple clusters for centralized management of network configurations in a vSphere environment.

VMware vSphere Hypervisor - The VMware vSphere Hypervisor is a free, bare-metal hypervisor from VMware that allows users to virtualize their servers and consolidate applications.

VMware vSphere Integrated Containers (VIC) - VMware vSphere Integrated Containers allow an administrator to deploy and manage containers alongside their traditional VMs in vSphere.

VMware vSphere Loyalty Program - The VMware vSphere Loyalty Program is a program that allows VMware EVO:RAIL users to apply vSphere Enterprise Plus licenses to their VMware EVO:RAIL appliances instead of having to pay for double.

VMware vSphere Metro Storage Cluster (VMware vMSC) - VMware vSphere Metro Storage Cluster (VMware vMSC) is a configuration option, introduced in vSphere 5, that allows for the use of stretched clusters that are spread across geographical locations.

VMware vSphere Network I/O Control (NIOC) - VMware vSphere Network I/O Control (NIOC) allows administrator to set up rules and policies to prioritize bandwidth for different network resource pools on a vSphere distributed switch.

VMware vSphere PowerCLI - VMware vSphere PowerCLI is a command-line interface (CLI) tool for automating vSphere and vCloud management.

VMware vSphere Remote Office Branch Office - VMware vSphere Remote Office Branch Office is a new vSphere product announced by VMware at VMworld 2014.

VMware vSphere Security Hardening Guide - The VMware vSphere Security Hardening Guide is an Excel document provided by VMware that lists more than 150 recommendations to systems administrators to further secure their vSphere environment.

VMware vSphere Site Recovery Manager (SRM) - VMware vSphere Site Recovery Manager (SRM) is a disaster recovery management product from VMware that provides automated failover and disaster recovery testing.

VMware vSphere Storage Appliance (VSA) - VMware vSphere Storage Appliance (VSA) is software developed by VMware that pools disk space from ESXi hosts to provide high availability features without requiring additional storage hardware.

VMware vSphere Update Manager (VUM) - VMware vSphere Update Manager (VUM) is software that manages vSphere versions, installs and updates third-party ESX/ESXi host extensions, automates the patch and upgrade process on ESX/ESXi hosts, and performs upgrades to virtual appliances, VMware Tools and virtual machine hardware.

VMware vSphere Web Client plug-in - VMware vSphere Web Client plug-ins are programs that either come from VMware itself or from third-party developers and partners to extend the vSphere Web Client with custom menu selections and toolbar icons that provide access to custom capabilities and external functionality.

VMware vStorage Thin Provisioning - VMware vStorage Thin Provisioning increases virtual machine (VM) storage use through dynamic allocation and intelligent provisioning of physical storage capacity.

VMware Workspace ONE - VMware Workspace ONE is a centralized management platform that combines the company's enterprise mobility management, cloud-based desktop management and identity management products to manage and secure end-user computing devices.

VMware Workstation Pro - VMware Workstation Pro is a 64-bit hosted hypervisor intended to implement virtualization on Microsoft Windows and Linux endpoint computers, such as desktop systems.

VMworld - VMworld is a conference covering virtualization and cloud computing technologies from VMware Inc and its partners and third-party vendors.

VMXNET Generation 3 (VMXNET3) - VMXNET Generation 3 (VMXNET3) is a virtual network adapter designed to deliver high performance in virtual machines (VMs) running on the VMware vSphere platform.

VNC - Virtual network computing (VNC) is a type of remote-control software that makes it possible to control another computer over a network connection.

vNUMA (virtual NUMA) - vNUMA (virtual NUMA) is a memory-access optimization method for VMware virtual machines (VMs) that helps prevent memory-bandwidth bottlenecks.

VOB - A Versioned Object Base (VOB) is a centralized database that stores version information about the files and folders in a software configuration management (SCM) system.

vocoder - A vocoder is an audio processor that captures the characteristic elements of an an audio signal and then uses this characteristic signal to affect other audio signals.

VoD - Video on demand (VoD) is an interactive TV technology that allows subscribers to view programming in real time or download programs and view them later.

voice activated e mail - Voice-enabled e-mail (sometimes referred to as voice-activated e-mail) uses voice recognition and speech synthesis technologies to enable users to access their e-mail from any telephone.

voice activation detection - In Voice over IP (VOiP), voice activation detection (VAD) is a software application that allows a data network carrying voice traffic over the Internet to detect the absence of audio and conserve bandwidth by preventing the transmission of "silent packets" over the network.

voice activation detection (VAD) - In Voice over IP (VOiP), voice activation detection (VAD) is a software application that allows a data network carrying voice traffic over the Internet to detect the absence of audio and conserve bandwidth by preventing the transmission of "silent packets" over the network.

voice authentication - Voice ID (sometimes called voice authentication) is a type of user authentication that uses voiceprintbiometrics, voice ID relies on the fact that vocal characteristics, like fingerprints and the patterns of people's irises, are unique for each individual.

voice control (voice assistance) - Voice control, also called voice assistance, is a user interface that allows hands-free operation of a digital device.

voice design - Voice design is the process of planning and mapping all the possible interactions that might occur between a voice assistant and an end user.

voice dial - Voice dial is a telephone feature that initiates a call when the user says a contact name or the digits in a phone number.

voice emulation (voice reproduction) - Voice emulation is the software-generated reproduction of an individual's speech.

voice enabled e mail - Voice-enabled e-mail (sometimes referred to as voice-activated e-mail) uses voice recognition and speech synthesis technologies to enable users to access their e-mail from any telephone.

voice ID - Voice ID (sometimes called voice authentication) is a type of user authentication that uses voiceprintbiometrics, voice ID relies on the fact that vocal characteristics, like fingerprints and the patterns of people's irises, are unique for each individual.

voice ID (voice authentication) - Voice ID (sometimes called voice authentication) is a type of user authentication that uses voiceprintbiometrics, voice ID relies on the fact that vocal characteristics, like fingerprints and the patterns of people's irises, are unique for each individual.

voice identification - Voice ID (sometimes called voice authentication) is a type of user authentication that uses voiceprintbiometrics, voice ID relies on the fact that vocal characteristics, like fingerprints and the patterns of people's irises, are unique for each individual.

voice logger - A voice logger is a device or program used to record audio information from telephones, radios, microphones and other sources for storage on a computer's hard drive or removable media.

Voice Markup Language - VoxML (Voice Markup Language) is a technology from Motorola for creating a voice dialog with a Web site in which a user can call a Web site by phone and interact with it through speech recognition and Web site responses.

voice morphing - Voice morphing is the software-generated alteration of a person's natural voice.

voice of the customer (VOC) - Voice of the customer (VOC) is the component of customer experience that focuses on customer needs, wants, expectations and preferences.

Voice over Internet Protocol - VoIP (voice over Internet Protocol) is the transmission of voice and multimedia content over an internet connection.

Voice over Internet Protocol caller identification - VoIP caller ID (Voice over Internet Protocol caller identification) is a caller ID application for VoIP phones that works in much the same way as caller ID on a conventional telephone line but with enhanced features and flexibility.

Voice over IP - VoIP (voice over Internet Protocol) is the transmission of voice and multimedia content over an internet connection.

voice over LTE (VoLTE) - Voice over LTE (VoLTE) is a digital packet technology that uses 4G LTE networks to route voice traffic and transmit data.

Voice Over Misconfigured Internet Telephones - Vomit (spelled all lower-case) is a Unix software utility that takes IP telephony packets captured by another Unix tool, tcpdump, and reassembles them into a Wave file that can be listened to over a computer's speakers.

Voice over WLAN - VoWLAN (Voice over WLAN) is a method of sending voice information in digital form over a wireless broadband network.

voice phishing - Vishing (voice or VoIP phishing) is an electronic fraud tactic in which individuals are tricked over the phone into revealing critical financial or personal information to unauthorized entities.

voice portal - A voice portal (sometimes called a vortal) is a Web portal that can be accessed entirely by voice.

voice portal (vortal) - A voice portal (sometimes called a vortal) is a Web portal that can be accessed entirely by voice.

voice recognition - Voice or speaker recognition is the ability of a machine or program to receive and interpret dictation or to understand and carry out spoken commands.

voice recognition (speaker recognition) - Voice or speaker recognition is the ability of a machine or program to receive and interpret dictation or to understand and carry out spoken commands.

voice search - Voice search is a speech recognition technology that allows users to search by saying terms aloud rather than typing them into a search field.

voice SEO - Voice SEO is the optimization of keywords and keyword phrases for searches through voice assistants.

voice signature - A voice signature is a type of electronic signature that uses an individual’s recorded verbal agreement in place of a handwritten signature.

voice spam - SPIT (spam over Internet telephony), sometimes known as vam (voice or VoIP spam), is unsolicited bulk messages broadcast over VoIP (Voice over Internet Protocol) to phones connected to the Internet.

voice squatting (skill squatting) - Voice squatting is an attack vector for voice user interfaces (VUIs) that exploits homonyms (words that sound the same but are spelled differently) and input errors (words that are mispronounced).

voice user interface (VUI) - Voice user interface (VUI) is speech recognition technology that allows people to interact with a computer, smartphone or other device through voice commands.

voice-activated e-mail - Voice-enabled e-mail (sometimes referred to as voice-activated e-mail) uses voice recognition and speech synthesis technologies to enable users to access their e-mail from any telephone.

voice-enabled e-mail - Voice-enabled e-mail (sometimes referred to as voice-activated e-mail) uses voice recognition and speech synthesis technologies to enable users to access their e-mail from any telephone.

voice-enabled e-mail (voice-activated e-mail) - Voice-enabled e-mail (sometimes referred to as voice-activated e-mail) uses voice recognition and speech synthesis technologies to enable users to access their e-mail from any telephone.

voice-to-text - Voice-to-text is a type of speech recognition program that converts spoken to written language.

voicemail - Voicemail is a method of storing voice messages electronically for later retrieval by intended recipients.

voicemail preview - Voicemail preview is a feature of unified messaging, and in particular voice-to-text messaging programs such as Microsoft Exchange.

voiceprint - A voiceprint is a set of measurable characteristics of a human voice that uniquely identifies an individual.

VoiceXML - VoiceXML is an application of the Extensible Markup Language (XML) which, when combined with voice recognition technology, enables interactive access to the Web through the telephone or a voice-driven browser.

VoIP - VoIP (voice over Internet Protocol) is the transmission of voice and multimedia content over an internet connection.

VoIP (voice over IP) - VoIP (voice over Internet Protocol) is the transmission of voice and multimedia content over an internet connection.

VoIP caller ID - VoIP caller ID (Voice over Internet Protocol caller identification) is a caller ID application for VoIP phones that works in much the same way as caller ID on a conventional telephone line but with enhanced features and flexibility.

VoIP caller ID (Voice over Internet Protocol caller identification) - VoIP caller ID (Voice over Internet Protocol caller identification) is a caller ID application for VoIP phones that works in much the same way as caller ID on a conventional telephone line but with enhanced features and flexibility.

VoIP gateway - An analog telephone adaptor (ATA) is a device used to connect a standard telephone to a computer or network so that the user can make calls over the Internet.

VoIP phishing - Vishing (voice or VoIP phishing) is an electronic fraud tactic in which individuals are tricked over the phone into revealing critical financial or personal information to unauthorized entities.

VoIP phone - A VoIP phone is a hardware- or software-based telephone designed to use voice over Internet Protocol (VoIP) technology to send and receive phone calls over an IP network.

VoIP Quizzes - We've gathered a collection of our quizzes about VoIP-related topics.

VoIP security threats - As VoIP becomes increasingly prevalent, so do the threats aimed at subverting its security.

VoIP spam - SPIT (spam over Internet telephony), sometimes known as vam (voice or VoIP spam), is unsolicited bulk messages broadcast over VoIP (Voice over Internet Protocol) to phones connected to the Internet.

VoIP trunk gateway - A VoIP trunk gateway is an interface that facilitates the use of plain old telephone service (POTS) equipment, such as conventional phone sets and fax machines, with a voice over IP (VoIP) network.

VoIP: Glossary - This handy glossary will assist you with terminology related specifically to voice over IP.

volatile - In general, volatile (from the Latin "volatilis" meaning "to fly")is an adjective used to describe something unstable or changeable.

volatile memory - Volatile memory is computer storage that only maintains its data while the device is powered.

Volcker rule - The Volcker rule is a section of the Dodd–Frank Act that restricts U.

volt - The volt (symbolized V) is the Standard International (SI) unit of electric potential or electromotive force.

volt ampere - Volt-ampere (VA) is a measurement of power in a direct current (DC) electrical circuit.

volt per meter - The standard unit of electric field (E-field) strength is the volt per meter (V/m).

volt per meter (V/m) - The standard unit of electric field (E-field) strength is the volt per meter (V/m).

volt-ampere - Volt-ampere (VA) is a measurement of power in a direct current (DC) electrical circuit.

volt-ampere (VA) - Volt-ampere (VA) is a measurement of power in a direct current (DC) electrical circuit.

voltage - Voltage, also called electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field.

voltage reference - A voltage reference is an electronic component or circuit that produces a constant DC (direct-current) output voltage regardless of variations in external conditions such as temperature, barometric pressure, humidity, current demand, or the passage of time.

voltage regulator module - A voltage regulator module (VRM) is an installable module that senses a computer's microprocessor voltage requirements and ensures that the correct voltage is maintained.

voltage regulator module (VRM) - A voltage regulator module (VRM) is an installable module that senses a computer's microprocessor voltage requirements and ensures that the correct voltage is maintained.

VoltDB - VoltDB is an in-memory database.

voltmeter - A voltmeter, also known as a voltage meter, is an instrument used for measuring the potential difference, or voltage, between two points in an electrical or electronic circuit.

volume - Volume (symbolized V) is a three-dimensional quantity representing amount or extent of physical bulk.

volume (amount of physical bulk) - Volume (symbolized V) is a three-dimensional quantity representing amount or extent of physical bulk.

volume manager - A volume manager is software within an operating system (OS) that controls capacity allocation for storage arrays.

Volume Shadow Copy Service-based backup - A Volume Shadow Copy Service-based backup operates at the block level of the file system to create application-consistent backups through a VSS writer and VSS requestor.

volume testing - Load testing is the process of subjecting a computer, peripheral, server, network or application to a work level approaching the limits of its specifications.

voluntary benefits - Voluntary benefits are optional, employee-paid benefits.

voluntary botnet - A voluntary botnet is a distributed network of computers whose processing power is harnessed to carry out a political or socially-motivated denial of service (DoS) attack.

voluntary severance package - A voluntary severance package is a financial and benefits-based incentive offered to motivate employees to leave a company of their own accord.

volunteer cloud (peer-to-peer cloud, ad-hoc cloud) - Volunteer cloud, also known as peer-to-peer cloud and ad-hoc cloud, is the coordination of members’ computing resources to amass a cloud architecture for a single purpose.

vomit - Vomit (spelled all lower-case) is a Unix software utility that takes IP telephony packets captured by another Unix tool, tcpdump, and reassembles them into a Wave file that can be listened to over a computer's speakers.

von Neumann bottleneck - The von Neumann bottleneck is a limitation on throughput caused by the standard personal computer architecture.

von Neumann, John - John von Neumann was the scientist who conceived a fundamental idea that serves all modern computers - that a computer's program and the data that it processes do not have to be fed into the computer while it is working, but can be kept in the computer's memory - a notion generally referred to as the stored-program computer.

Vonage - Vonage is a communication platform as a service (CPaaS) provider for consumers and businesses that makes it possible for customers to connect and communicate on any device through cloud-hosted voice, video, chat and short message service (SMS).

Vorbis - Vorbis is an open source patent-free audio compression format, developed as a replacement for proprietary digital audio encoding formats, such as MP3, VQF, and AAC.

vortal - A voice portal (sometimes called a vortal) is a Web portal that can be accessed entirely by voice.

vortal - Vortal is also short for voice portal.

Vouch by Reference - Vouch By Reference (VBR) is a protocol for adding third-party certification to email.

Vouch by Reference (VBR) - Vouch By Reference (VBR) is a protocol for adding third-party certification to email.

VoWi-Fi - VoWLAN (Voice over WLAN) is a method of sending voice information in digital form over a wireless broadband network.

VoWLAN - VoWLAN (Voice over WLAN) is a method of sending voice information in digital form over a wireless broadband network.

VoWLAN (Voice over WLAN) - VoWLAN (Voice over WLAN) is a method of sending voice information in digital form over a wireless broadband network.

VoWLAN cellular - A Wi-Fi cell phone (also called a cellular-Internet phone or cell-Internet phone) is a wireless telephone set that can automatically switch between conventional cellular and Wi-Fi VoIP modes, even during the course of a conversation.

voxel - A voxel is a unit of graphic information that defines a point in three-dimensional space.

VoxML - VoxML (Voice Markup Language) is a technology from Motorola for creating a voice dialog with a Web site in which a user can call a Web site by phone and interact with it through speech recognition and Web site responses.

VoxML (Voice Markup Language) - VoxML (Voice Markup Language) is a technology from Motorola for creating a voice dialog with a Web site in which a user can call a Web site by phone and interact with it through speech recognition and Web site responses.

VPD - A Virtual Private Database (VPD) makes the database tables seem like they belong to one user when multiple users may actually be using that table.

VPD - VPD (vital product data) is information about a device that is stored on a computer's hard disk (or the device itself) that allows the device to be administered at a system or network level.

VPD (vital product data) - VPD (vital product data) is information about a device that is stored on a computer's hard disk (or the device itself) that allows the device to be administered at a system or network level.

VPLS - Virtual private LAN service (VPLS) is a technology that makes it possible to connect geographically dispersed local area networks (LANs) logically over the Internet.

VPN - A virtual private network (VPN) is a service that creates a safe, encrypted online connection.

VPN (virtual private network) - A virtual private network (VPN) is a service that creates a safe, encrypted online connection.

VPN appliance - A VPN (virtual private network) appliance is a network device equipped with enhanced security features.

VPN Reconnect - VPN Reconnect is a feature of Windows 7 and Windows Server 2008 R2 that allows a virtual private network (VPN) connection to remain open during a brief interruption of Internet service.

VPN routing and forwarding - Virtual routing and forwarding (VRF) is a technology included in IP (Internet Protocol) network routers that allows multiple instances of a routing table to exist in a router and work simultaneously.

VPS - A virtual private server (VPS), also called a virtual dedicated server (VDS), is a virtual server that appears to the user as a dedicated server, but that is actually installed on a computer serving multiple websites.

VR headset (virtual reality headset) - A virtual reality headset is a heads-up display (HUD) that allows users to interact with simulated environments and experience a first-person view (FPV).

VR locomotion (virtual reality locomotion) - VR locomotion is technology that enables movement from one place to another (locomotion) within a virtual reality environment.

VR room (virtual reality room) - Unlike seated or stationary VR, a VR room allows the user to move around with a fair degree of freedom, which more closely replicates a real-world experience.

VRAM - VRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display.

VRAM (video RAM) - VRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display.

VRF - Virtual routing and forwarding (VRF) is a technology included in IP (Internet Protocol) network routers that allows multiple instances of a routing table to exist in a router and work simultaneously.

VRM - Vendor risk management (VRM) is a comprehensive plan for identifying and decreasing potential business uncertainties and legal liabilities regarding the hiring of 3rd party vendors for IT products and services.

VRM - A voltage regulator module (VRM) is an installable module that senses a computer's microprocessor voltage requirements and ensures that the correct voltage is maintained.

VRML - VRML (Virtual Reality Modeling Language) is a language for describing three-dimensional (3-D) image sequences and possible user interactions to go with them.

VRML (Virtual Reality Modeling Language) - VRML (Virtual Reality Modeling Language) is a language for describing three-dimensional (3-D) image sequences and possible user interactions to go with them.

VRRP - VRRP (Virtual Router Redundancy Protocol) is an Internet protocol that provides a way to have one or more backup routers when using a statically configured router on a local area network (LAN).

VSA - A virtual SAN appliance (VSA) is a software bundle that allows a storage manager to turn the unused storage capacity in his network's virtual servers into a storage area network (SAN).

VSAM - VSAM (Virtual Storage Access Method ) is a file management system for IBM's larger operating systems, including its primary mainframe operating system, MVS, now called OS/390.

VSAM (Virtual Storage Access Method ) - VSAM (Virtual Storage Access Method ) is a file management system for IBM's larger operating systems, including its primary mainframe operating system, MVS, now called OS/390.

VSAN - A virtual storage area network (VSAN) is a logical partition in a physical storage area network (SAN).

VSAT - VSAT (Very Small Aperture Terminal) is a satellite communications system that serves home and business users.

VSAT (Very Small Aperture Terminal) - VSAT (Very Small Aperture Terminal) is a satellite communications system that serves home and business users.

VSB - Vestigial sideband (VSB) is a type of amplitude modulation (AM) technique (sometimes called VSB-AM) that encodes data by varying the amplitude of a single carrier frequency.

VSE - Visual Studio Express (VSE) is a freeware version of Microsoft's Visual Studio development environment toolset.

VSM - Virtual systems management (VSM), also known as virtual system management, is the process of remotely managing the allocation and use of resources in conventional networks as well as in virtual area networks (VANs), virtual private networks (VPNs), virtual network computing (VNC) and virtual servers.

VSMP - VSMP (virtual symmetric multiprocessing) is a method of SMP (symmetric multiprocessing) in which two or more virtual processors are mapped inside a single virtual machine or partition.

VSMP (virtual symmetric multiprocessing) - VSMP (virtual symmetric multiprocessing) is a method of SMP (symmetric multiprocessing) in which two or more virtual processors are mapped inside a single virtual machine or partition.

VSP - On the Internet, a vertical solutions provider (VSP) is a company that focuses on delivering industry-specific application hosting services to customers in a specific vertical market such as manufacturing, health care, retailing, or financial service.

VSP - Another meaning for VSP is vertical solutions provider.

VSPEX - VSPEX is a platform specification from Dell EMC to guide the building of systems for converged and hyper-converged infrastructure (HCI).

VSPEX BLUE - VSPEX™ BLUE is a hyper-converged appliance from EMC Corporation that includes compute, memory and storage resources in a single device.

vSphere CLI (vCLI) - VMware's vSphere CLI (vCLI) commands are used in a command line interface (CLI) when managing VMware ESX/ESXi infrastructures.

vSphere HA (VMware High Availability) - VMware vSphere HA (High Availability) is a utility included in VMware's vSphere software that can restart failed virtual machines (VMs) on alternative host servers to reduce application downtime.

vSphere hot add - VMware vSphere hot add is a feature that allows an administrator to increase the random access memory (RAM) capacity of a running virtual machine (VM) without downtime.

vSphere hot plug - vSphere hot plug is a function lets administrators add additional virtual hardware to running virtual machines (VMs).

vSphere Replication - VSphere Replication is a feature of vSphere 5.

VSTO - VSTO, or Visual Studio Tools for Office, or Microsoft Visual Studio Tools is part of Microsoft's Visual Studio.

VSTO (Visual Studio Tools for Office or Microsoft Visual Studio Tools) - VSTO, or Visual Studio Tools for Office, or Microsoft Visual Studio Tools is part of Microsoft's Visual Studio.

vStorage API - A vStorage API is an application program interface (API) from VMware that enables third-party storage and backup vendors to integrate their products with VMware’s vSphere server virtualization platform.

vStorage API for Multipathing - vStorage API for Multipathing (VAMP) is a set of application program interfaces (APIs) from VMware that help to control I/O path selection in a host to storage devices.

vStorage API for Multipathing (VAMP) - vStorage API for Multipathing (VAMP) is a set of application program interfaces (APIs) from VMware that help to control I/O path selection in a host to storage devices.

vStorage APIs for Array Integration - vStorage API for Array Integration (VAAI) is an application program interface (API) framework from VMware that enables certain storage tasks, such as thin provisioning, to be offloaded from the VMware server virtualization hardware to the storage array.

vStorage APIs for Array Integration (VAAI) - vStorage API for Array Integration (VAAI) is an application program interface (API) framework from VMware that enables certain storage tasks, such as thin provisioning, to be offloaded from the VMware server virtualization hardware to the storage array.

vStorage APIs for Storage Awareness - vStorage APIs for Storage Awareness (VASA) is a set of application program interfaces (APIs), released with VMware’s vSphere 5, that enables vSphere vCenter to recognize the capabilities of storage arrays that support the API.

vStorage APIs for Storage Awareness (VASA) - vStorage APIs for Storage Awareness (VASA) is a set of application program interfaces (APIs), released with VMware’s vSphere 5, that enables vSphere vCenter to recognize the capabilities of storage arrays that support the API.

VSTS - Visual Studio Team Services (VSTS) -- rebranded as Azure DevOps in 2018 -- is an Azure cloud-hosted extension of Microsoft's Team Foundation Server (TFS) -- now called Azure DvOps -- that assist development teams with special tools and services for software programmers, analysts and testers as well as IT project or team managers.

VT - Also see cathode ray tube (CRT), the specialized kind of vacuum tube that is in most desktop display monitors.

VTAM - VTAM (Virtual Telecommunications Access Method) is an IBM application program interface (API) for communicating with telecommunication devices and their users.

vTax - VTax is the derogatory nickname the general public gave to a licensing change for VMware vSphere 5.

VUCA (volatility, uncertainty, complexity and ambiguity) - VUCA is an acronym that stands for volatility, uncertainty, complexity and ambiguity, a combination of qualities that, taken together, characterize the nature of some difficult conditions and situations.

Vulcan nerve pinch - In a personal computer with the Windows operating system, Ctrl-Alt-Delete is the combination of keyboard keys that the computer user can press at the same time to terminate an application task or to reboot the operating system (have it shut down and restart itself).

vulnerability (information technology) - A vulnerability, in information technology (IT), is a flaw in code or design that creates a potential point of security compromise for an endpoint or network.

vulnerability analysis - A vulnerability assessment is the process of defining, identifying, classifying and prioritizing vulnerabilities in computer systems, applications and network infrastructures.

vulnerability and patch management - Vulnerability management is a pro-active approach to managing network security.

vulnerability assessment - A vulnerability assessment is the process of defining, identifying, classifying and prioritizing vulnerabilities in computer systems, applications and network infrastructures.

vulnerability assessment (vulnerability analysis) - A vulnerability assessment is the process of defining, identifying, classifying and prioritizing vulnerabilities in computer systems, applications and network infrastructures.

vulnerability disclosure - Vulnerability disclosure is the practice of publishing information about a computer security problem, and a type of policy that stipulates guidelines for doing so.

Vulnerability Discovery and Remediation - The Open Source Hardening Project is an initiative of the United States Department of Homeland Security, created to improve the security of open source code.

vulnerability management - Vulnerability management is a pro-active approach to managing network security through reducing the likelihood that flaws in code or design compromise the security of an endpoint or network.

vulnerability management planning - Vulnerability management planning is a comprehensive approach to the development of a continuous and repetitive system of practices and processes designed to identify, analyze and address flaws in hardware or software that could serve as attack vectors.

vulnerability scanner - A vulnerability scanner is a program that performs the diagnostic phase of a vulnerability analysis, also known as vulnerability assessment.

vulture capital - Vulture capital is funds invested to profit from unsuccessful enterprises and individuals or organizations that lack the resources to achieve success.

VVOLS (Virtual Volumes) - VVOLs is a provisioning feature for vSphere 6 that changes how virtual machines (VMs) are stored and managed.

VWSR - Standing-wave ratio (SWR) is a mathematical expression of the non-uniformity of an electromagnetic field (EM field) on a transmission line such as coaxial cable.

VXLAN (Virtual Extensible LAN) - Virtual Extensible LAN (VXLAN) is a proposed Layer 3 encapsulation protocol that will make it easier for network engineers to scale out a cloud computing environment while logically isolating cloud apps and tenants.

VXLAN gateway (Virtual Extensible VLAN gateway) - A VXLAN gateway is a solution that allows a virtual extensible LAN (VXLAN) to communicate with another network, particularly a virtual LAN (VLAN).

VxWorks - VxWorks is a real-time operating system (RTOS) that can be used in embedded systems.