Videoconference

A name given to a meeting that is spread out geographically, and only connected by means of video cameras and microphones. Videoconferencing usually uses telephone lines (possibly analogue but more commonly ISDN) to transmit data between the sites.

Virtual Memory

A portion of hard disk space set aside for use when the RAM fills up.

Virus

A parasitic program written intentionally to enter a computer without the user's permission or knowledge. The word parasitic is used because a virus attaches to files or boot sectors and replicates itself thus continuing to spread. Though some viruses do little but replicate, others can cause serious damage or affect program and system performance. A virus should never be assumed harmless and left on a system. (Definition taken from the Symantec Website (http://www.symantec.com/avcenter/vfaq.html#what_virus)

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