Technology terms starting with V

313 terms

101. VFR Visual Flight Rules
102. VFTG Abbreviation for voice-frequency telegraph.
103. VGA Video Graphics Array (Telecomm/Computer term).
104. VHF Very High Frequency.
105. VHSIC Very High Speed Integrated Circuit. 317
106. VI (Virtual Interface) An architecture designed to allow bulk data transfer directly to or from application buffers.
107. via net loss (VNL) Pertaining to circuit performance prediction and description that allows circuit parameters to be predetermined and the circuit to be designed to meet…
108. Victim A person who is the object of the crime.
109. video 1. An electrical signal containing timing (synchronization), luminance (intensity), and often chrominance (color) information that, when displayed on an…
110. video codec See codec.
111. video description An audio narration for television viewers who are blind or visually disabled, which consists of verbal descriptions of key visual elements in a television…
112. video display terminal Synonym visual display unit. See monitor.
113. video display unit Synonym visual display terminal. See monitor.
114. video frame See frame.
115. video imagery A sequence of video frames. [T1.801.02-1996]
116. video on demand (VOD) A previously recorded media stream that users can request at a time most convenient to them. Users can rewind and fast-forward on-demand media streams.
117. video pair cable Transmission cable containing low-loss pairs with an impedance of 125 ohms; used for telephone carrier circuits, closed-circuit TV, TV pick-ups etc.
118. video recorder (VCR) Equipment for recording the video waveform so that the mapped images may be stored and later retrieved as the video waveform. [After SMPTE]
119. video server A server that distributes video images on demand. [2382-pt.35]
120. video signal description The standard video-signal waveform, measured in IRE units. [After T1.Rpt16-1992]
121. video teleconference A teleconference that includes video communications. 2. Pertaining to a two-way electronic communications system that permits two or more persons in…
122. video teleconferencing unit (VTU) Equipment that performs video teleconference functions, such as coding and decoding of audio and video signals and multiplexing of video, audio, data, and…
123. videoconference See video teleconference.
124. videophone A telephone that is coupled to an imaging device that enables the call receiver or the call originator, or both, to view one another as on television, if…
125. VIDS Vehicle Integrated Defense Software (USA term).
126. view A logical table whose data are not physically stored. You define a view to access a subset of the columns stored in a row, access a set of columns stored…
127. viewdata A type of information-retrieval service in which a subscriber can (a) access a remote database via a common carrier channel, (b) request data, and (c)…
128. viewer Application software that enables a user to have read-only access to electronic documents or images. [After 2382-pt.35]
129. VIF A single virtual interface that is created from multiple physical interfaces by using the EtherChannel technology.
130. VIGILANTE Viewing Image/Gimbaled Instrumentation Lab-Analog Neural Three-D Experiment. VIGILANTE involves building a small computer (ANTE) offering 1/12 Operation…
131. VIM Vibration Isolation Module.
132. Vinegar syndrome Characteristic of the decomposition of acetate based magnetic tape where acetic acid is a substantial by-product that gives the tape a vinegar-like odor.
133. VINSON Encrypted Ultra High Frequency Communications System.
134. Violation A crime of a less serious nature than a felony or misdemeanor. In Delaware, the statute a person is charged with normally states whether it is a…
135. Viral Marketing Self propagating marketing techniques. Common modes of transmission are email, blogging, and word of mouth marketing channels.
136. virtual Is a process by which multiple operating systems (servers) run on a single piece of hardware or physical server
137. virtual appliance A virtual appliance is a minimalistic virtual machine image designed to run under Parallels, VMWare, Xen, Microsoft Virtual PC, Virtual Iron or other…
138. virtual call A call, established over a network, that uses the capabilities of either a real or virtual circuit by sharing all or any part of the resources of the…
139. virtual call capability A service feature in which (a) a call set-up procedure and a call disengagement procedure determine the period of communication between two data terminal…
140. virtual call facility Synonym virtual call capability.
141. virtual carrier frequency In radio or carrier systems in which no carrier is transmitted, e.g., single sideband or double sideband with suppressed carrier, the location in the…
142. virtual channel (VC) The communication channel associated with a virtual channel connection (VCC) that provides for the transport of asynchronous transfer mode (ATM) cells…
143. virtual channel connection (VCC) A concatenation of VCLs (virtual channel links) that extends between the points where the ATM (asynchronous transfer mode) service users access the ATM…
144. virtual channel identifier (VCI) A unique numerical tag defined by a 16-bit field in the ATM cell header that identifies a virtual channel over which the cell is to travel.
145. virtual channel link (VCL) A means of unidirectional transport of ATM cells between the point where a VCI value is assigned and the point where that value is translated or removed.
146. virtual circuit (VC) A communications arrangement in which data from a source user may be passed to a destination user over various real circuit configurations during a single…
147. virtual circuit capability A network-provided service feature in which a user is provided with a virtual circuit.
148. virtual connection A logical connection that is made to a virtual circuit.
149. Virtual CPU A system running Red Hat Virtualization has a number of virtual cpus, or vcpus.
150. virtual data link capability (VDLC) protocol A wideband protocol that is used to transport digital data packets arriving from the channelized side in HDLC frames. [T1.509-1995]
151. virtual desktop The name used to describe a user's graphical working area within a window manager.
152. Virtual Disk A file or set of files that appears as a physical disk drive to a guest operating system.
153. Virtual Domain A domain hosted by a virtual server account.
154. virtual floppy disk A file-based version of a physical floppy disk. A virtual floppy disk is stored as a file with a .vfd file name extension.
155. virtual hard disk The storage medium for a virtual machine. It can reside on any storage topology that the host operating system can access, including external devices…
156. virtual height The apparent height of an ionized layer, as determined from the time interval between the transmitted signal and the ionospheric echo at vertical…
157. virtual host Multiple hosts plus domain names mapped to a single IP address.
158. virtual infrastructure creating a layer of abstraction between computing, storage, and networking hardware, and the operating systems running on it, resulting in a pool of…
159. Virtual Infrastructure Client (VI Client) A user interface that runs locally in a Windows machine and provides access to the virtual machine's display.
160. virtual instruction Synonym teletraining.
161. virtual interface (VI) An architecture designed to allow bulk data transfer directly to or from application buffers.
162. virtual local area network (VLAN) A LAN created via software rather than dedicated hardware.
163. virtual machine See Java Virtual Machine (JVM).
164. virtual machine configuration The configuration of the resources assigned to a virtual machine. Examples include devices such as disks and network adapters, as well as memory and…
165. Virtual Machine Import/Export A feature offered by AWS that users can use to import virtual machine images from their existing environment to Amazon EC2 instances and export them back…
166. Virtual Machine Management Service The Hyper-V service that provides management access to virtual machines.
167. virtual machine snapshot A file-based snapshot of the state, disk data, and configuration of a virtual machine at a specific point in time.
168. virtual machines A virtual machine is a software implementation of a physical machine or programming language (for example the Java Runtime Environment or LISP).
169. virtual memory A computer will have a limited amount of real memory available to it. Programs often require more memory than the amount of real memory.
170. virtual network A network that provides virtual circuits and that is established by using the facilities of a real network.
171. Virtual Network Manager A Hyper-V component used to create and manage virtual networks.
172. virtual office A work environment in which employees work cooperatively from different locations using a computer network. [After 2382-pt.35] Synonym virtual workplace.
173. virtual password [An] information system (IS) password computed from a passphrase meeting the requirements of password storage (e.g., 64 bits). [INFOSEC-99]
174. virtual path See virtual circuit.
175. virtual path identifier (VPI) A field in the ATM cell header that indicates the virtual path over which the cell should be routed.
176. Virtual Private Cloud (VPC) A term coined by Reuven Cohen, CEO and founder of Enomaly. The term describes a concept that is similar to, and derived from, the familiar concept of a…
177. virtual private gateway (VPG) Virtual private gateway. The Amazon side of a VPN connection that maintains connectivity.
178. Virtual Private Network (VPN) A virtual private network is a logical network that is established, at the application layer of the Open Systems Interconnection (OSI) model, over an…
179. virtual reality An interactive, computer-generated simulated environment with which users can interact using specialized peripherals such as data gloves and head-mounted…
180. Virtual root A shortcut pointer to a physical storage location. Virtual roots are normally defined to allow users and applications to connect with a short "friendly"…
181. Virtual Server A virtual computer that resides on an HTTP server but appears to the user as a separate HTTP server.
182. Virtual SMP A VMware proprietary technology that supports multiple virtual CPUs in a single virtual machine.
183. virtual storage The storage space that may be regarded as addressable main storage by the user of a computer system in which virtual addresses are mapped into real…
184. virtual table See view.
185. virtual terminal (VT) In open systems, an application service that (a) allows host terminals on a multi-user network to interact with other hosts regardless of terminal type…
186. virtual tributary (VT) A structure designed for transport and switching of sub-STS-1 payloads. There are currently four sizes of VT. [T1.105-1988]
187. virtual workplace Synonym virtual office.
188. virtual world A simulated environment that appears to have the characteristics of some other environment, and in which participants perceive themselves as interactive…
189. Virtualization A feature that allows standard users to run applications that normally write to per-computer files and registry keys.
190. Virtualization Assist A general term for technology included in some 64-bit processors from AMD and Intel that can allow 64-bit operating systems to be run in virtual machines…
191. virtualization hardware assist moving aspects of virtualization from a software hypervisor to CPU-level hardware to increase speed and efficiency.
192. Virtualization Hardware Support Industry standard servers will provide improved hardware support for virtualization.
193. Virtualization Overhead The cost difference between running an application within a virtual machine and running the same application natively.
194. virtualized Applications are decoupled from the underlying hardware. Multiple applications can run on one computer (virtualization a la VMWare) or multiple computers…
195. Virus (VY-rus) In medicine, a very simple microorganism that infects cells and may cause disease.
196. Virus Hoax An urgent warning message about a nonexistent virus.
197. Virus Scanning API A virus-scanning API that is used by third-party antivirus service providers to protect computers that have the Exchange Server 2007 Mailbox server role…
198. virus signature A unique bit string that is common to each copy of a particular virus and that may be used by a scanning program to detect the presence of the virus.
199. VIS 1. Visible satellite imagery 2. Visibile or Visibility
200. VIS/UV Visible/Ultraviolet.