LAN
A network that connects computers in a relatively small, predetermined area (such as a room, a building, or a set of buildings). LANs can be connected to each other over telephone lines and radio waves. Workstations and personal computers in an office are commonly connected in a LAN. This means that many users can share expensive devices, such as laser printers, as well as data, and allows individual users to send or receive files and to share access to files and data. Users can also use the LAN to communicate with each other, by sending e-mail or engaging in chat sessions. Each computer connected to a LAN is called a node.
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