A connection between two devices that acts as though it’s a direct connection even though it may physically be circuitous. The term is used most frequently to describe connections between two hosts in a packet-switching network. In this case, the two hosts can communicate as though they have a dedicated connection even though the packets might actually travel very different routes before arriving at their destination. An X.25 connection is an example of a virtual circuit.
Virtual circuits can be either permanent (called PVCs) or temporary (called SVCs).
- virtual dedicated server
Abbreviated as VDS, a virtual dedicated server is a type of virtualization that enables a virtual server, which is a shared resource and not a dedicated server, to to work and act as if it were a dedicated server. Each VDS has its own disk space, bandwidth, CPU allocation, memory and operating system. Also called […]
- virtual desktop
A feature supported by some notebook computers that enables them to display images on an external monitor at a higher resolution than is supported by the built-in flat-panel display. For example, most flat-panel displays are limited to a maximum resolution of 800×600. With the virtual desktop feature, you could connect the computer to an external […]
- virtual device driver
In Windows systems, a special type of device driver that has direct access to the operating system kernel. This allows them to interact with system and hardware resources at a very low level. In Windows 95, virtual device drivers are often called VxDs because the filenames end with the .vxd extension .
- virtual group
Slang term used to describe a group of people who socialize and interact online — in multiplayer games, forums, chat rooms or on social networking sites, but who have not necessarily met offline, in real life.
- virtual honeypot
A software program that is designed to appear to be a real functioning network but is actually a decoy built specifically to be probed and attacked by malicious users. In contrast to a honeypot, which is typically a hardware device that lures users into its trap, a virtual honeypot uses software to emulate a network.