U

UNIX
UNIX is an operating system used in many workstations and mid-range computer systems. It is an alternative to PC and Macintosh computer operating systems.

UNIX-to-UNIX Copy Program (UUCP)
UUCP is a protocol used for communication between consenting UNIX systems.

V

Virtual Circuit
A virtual circuit is a communication path that appears to be a single circuit, even though the data may take varying routes between the source and destination nodes.

W

Wide Area Network (WAN)
A WAN is the part of a network that connects users to networks, or networks to networks over long distance.

Workstations
Workstations are a type of computer, typically more powerful than a PC, but still used by a single user.

World Wide Web (Web)
The Web is a public domain hypertext application used for finding and retrieving information on the Internet.