IT Glossary - V - ITU Online IT Training
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IT Glossary
Key Terms To Know In The IT Industry

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Virtual Network Architecture

The design of a computer network that includes both physical and virtual networking components and services.

You will find this term commonly used in Networking

Virtual Network Embedding

A technique in network virtualization that allows the mapping of virtual network requests onto a physical network infrastructure.

You will find this term commonly used in Networking

Virtual Network Functions

Software-based network services that can be deployed and managed independently on a virtualized infrastructure.

You will find this term commonly used in Networking

Virtual Network Interface

A software-based network interface that enables communication between virtual machines and external networks.

You will find this term commonly used in Networking

Virtual Network Operator

A provider that offers network services by leasing capacity from other telecommunications carriers rather than owning the network infrastructure.

You will find this term commonly used in Networking, Telecommunications

Virtual Network Peering

The process of connecting two virtual networks to each other, allowing them to behave as though they are a single network.

You will find this term commonly used in Networking, Cloud Computing

Virtual Patching

A security technique that involves the deployment of a security policy or mechanism to temporarily mitigate a known vulnerability until an official patch is released.

You will find this term commonly used in Cybersecurity

Virtual Path Identifier (VPI)

In networking, part of the label that identifies a particular virtual path link within a network.

You will find this term commonly used in Networking

Virtual Private Cloud

A Virtual Private Cloud (VPC) is a secure and isolated section of a public cloud infrastructure that allows organizations to deploy and manage resources in a dedicated virtual network environment. It provides enhanced security and control over cloud resources.

You will find this term commonly used in Cloud Computing, Networking, Security

Virtual Private Cloud (VPC)

A virtualized network infrastructure that provides cloud computing resources within a public cloud environment.

You will find this term commonly used in Cloud Computing

Virtual Private Network (VPN)

A virtual private network (VPN) is a secure network connection established over a public network, such as the internet, allowing users to access and transmit data securely between remote locations or devices as if they were directly connected.

You will find this term commonly used in Networking, Security, Remote Access

Virtual Private Network as a Service (VPNaaS)

VPNaaS is a cloud-based service that provides Virtual Private Network (VPN) capabilities to users on a subscription basis. It offers secure remote access and data encryption without the need for on-premises VPN infrastructure.

You will find this term commonly used in Networking, Cloud Computing, Security

Virtual Private Server (VPS)

A virtual server provided by a hosting company, allowing users to host websites or applications on a virtualized environment.

You will find this term commonly used in Virtualization

Virtual Processing Unit (VPU)

A processor designed for the efficient handling of tasks related to virtualization technologies.

You will find this term commonly used in Hardware, Virtualization

Virtual Prototype

A digital simulation of a physical product that can be used for testing and validation before it is built.

You will find this term commonly used in Product Development

Virtual Reality (VR)

Virtual reality (VR) is a simulated experience that immerses users in a computer-generated environment, typically viewed through headsets or goggles, enabling interactive and immersive experiences in gaming, training, education, and simulation.

You will find this term commonly used in Emerging Technologies, Entertainment, Training

Virtual Reality Developer

Specializes in creating immersive experiences using VR technology for gaming, education, and training simulations.

You will find this term commonly used in VR Development, Interactive Design

Virtual Reality Exposure Therapy (VRET)

The use of virtual reality technology to treat patients with anxiety disorders and phobias by exposing them to their fears in a controlled, virtual environment.

You will find this term commonly used in Healthcare IT, Virtual Reality

Virtual Reality Modeling Language (VRML)

A standard file format for representing 3-dimensional (3D) interactive vector graphics, designed particularly with the World Wide Web in mind.

You will find this term commonly used in Graphic Design, Web Development

Virtual Reality Therapy

The use of virtual reality technology as a therapeutic tool, often for psychological or physical rehabilitation purposes.

You will find this term commonly used in Healthcare IT

Virtual Reference Station (VRS)

A system used in precision navigation and GPS applications to improve accuracy through virtual base stations.

You will find this term commonly used in Networking, Geospatial Technology

Virtual Resource Pooling

The practice of aggregating resources, such as storage or networking capabilities, across a network to be used by virtual machines or applications as needed.

You will find this term commonly used in Virtualization, Cloud Computing

Virtual Retinal Display (VRD)

A display technology that projects images directly onto the retina of the eye, creating the illusion of viewing a conventional display.

You will find this term commonly used in Hardware, Display Technology

Virtual Router

A software function that replicates the functionality of a hardware router in a virtualized environment.

You will find this term commonly used in Networking, Cloud Computing

Virtual Routing

The practice of routing traffic between different virtual networks or between virtual and physical networks.

You will find this term commonly used in Networking

Virtual SAN (vSAN)

A software-defined storage solution that aggregates locally attached storage devices into a distributed storage pool shared across multiple hosts.

You will find this term commonly used in Virtualization

Virtual Secure Mode (VSM)

A security feature that isolates sensitive operations and data from the rest of the operating system to protect against vulnerabilities.

You will find this term commonly used in Cybersecurity

Virtual Server

A server at the user's or client's request that offers dedicated services without being a physically separate server.

You will find this term commonly used in Networking, Virtualization

Virtual Service Network (VSN)

A network configuration that allows for the creation of virtualized network services within a physical network infrastructure.

You will find this term commonly used in Networking

Virtual Service Router

A router operating in a virtualized environment, providing routing services without the need for dedicated hardware.

You will find this term commonly used in Networking

Virtual Space

In the context of virtual reality and augmented reality, the digital environment in which users can interact with computer-generated content.

You will find this term commonly used in Virtual Reality

Virtual Studio Technology (VST)

A standard for creating and integrating audio synthesizers and effects plugins with audio editors and hard-disk recording systems.

You will find this term commonly used in Multimedia, Audio Production

Virtual Switch

A software application that allows one virtual machine (VM) to communicate with another.

You will find this term commonly used in Cloud Computing, Networking

Virtual Switching System (VSS)

A network system that pools multiple network switches into a single logical switch to increase network redundancy and reliability.

You will find this term commonly used in Networking

Virtual Tape

A storage technology that emulates tape storage, typically used for data backup and recovery, on disk or other media.

You will find this term commonly used in Storage

Virtual Tape Library (VTL)

A data storage system that emulates a traditional tape library using disk storage, providing the benefits of tape backup with the performance and reliability of disk storage.

You will find this term commonly used in Storage

Virtual Team

A group of individuals who work together from different geographic locations, relying on communication technology such as email, video conferencing, and collaboration tools.

You will find this term commonly used in Business Strategy, Communication

Virtual Terminal (VT)

A software application that emulates a hardware terminal, allowing users to access a remote system as if they were physically present at the terminal.

You will find this term commonly used in Networking

Virtual Texturing

A technique used in computer graphics to efficiently manage and display large textures that would otherwise exceed the GPU's memory capacity.

You will find this term commonly used in Graphic Design, Game Development

Virtual Time

A concept in distributed computing and virtualization that refers to the simulation of time passing in a virtual environment.

You will find this term commonly used in Software Development

Virtual Topology

The logical layout of a network as seen by the network's users, regardless of the physical layout of the cables and hardware that comprise the network.

You will find this term commonly used in Networking

Virtual Training Environment

A simulated digital environment designed for training purposes, allowing users to practice skills and scenarios virtually.

You will find this term commonly used in Education Technology

Virtual User (VUser)

In software testing, a simulated user that mimics real user actions to test the performance and functionality of software applications.

You will find this term commonly used in Software Development, Testing

Virtual Workspace

A digital environment that provides tools and resources for remote work and collaboration.

You will find this term commonly used in Business Strategy, Collaboration

Virtual World

An online community that takes the form of a computer-based simulated environment where users can interact with one another and create objects.

You will find this term commonly used in Social Media, Gaming

Virtualization

The process of creating a virtual (rather than actual) version of something, such as hardware platforms, operating systems, storage devices, or network resources.

You will find this term commonly used in General IT

Virtualization Container

A lightweight, portable, and self-sufficient software package that contains everything needed to run an application, including code, runtime, libraries, and settings.

You will find this term commonly used in Virtualization

Virtualization Hypervisor

A software or firmware that creates and runs virtual machines, allowing multiple operating systems to run on a single physical server.

You will find this term commonly used in Virtualization

Virtualization Layer

Software that abstracts physical hardware resources and provides a virtualized environment for running virtual machines and applications.

You will find this term commonly used in Virtualization

Virtualization Management

Software tools and processes used to manage virtualized infrastructure, including servers, storage, and networks.

You will find this term commonly used in Virtualization

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