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Comprehensive
Dictionary Suite
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Ethernet a standard local area network architecture that specifies connection types, devices, and protocols (formerly a Xerox Corporation trademark).
fire wall (usu. spelled as one word) software or hardware that prevents unauthorized access to a computer or local area network from an outside network such as the Internet. [1/2 definitions]
LAN abbreviation of "Local Area Network," a group of computers, such as work stations in a business, connected with each other by their own data communications network that allows sharing of devices and data within a limited area.