Local Area Networks
A computer network that spans a relatively small area.
Most LANs are confined to a single building or group of buildings.
LANs are distinguished from other kinds of networks by three
characteristics:
- their size
- their transmission technology
- their topology.
Connecting and communicating is made possible by:
- a network interface card at each computer, file
server, etc.
- a cable connection between these components
- a network controller, and (4) a network-access method.
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Local Area Network (LAN) -A computer network that spans a
relatively small area. Most LANs are confined to a single building
or group of buildings.
Most LANs connect workstations and personal computers. Each node
(individual computer ) in a LAN has its own CPU with which it
executes programs, but it also is able to access data and devices
anywhere on the LAN. This means that many users can share devices,
such as printers, as well as data. Users can also use the LAN to
communicate with each other, by sending e-mail or engaging in chat
sessions.
A LAN
can be connected to other LANs over any distance via telephone lines
and radio waves. Multiple LANs connected in this manner
is called a wide-area network (WAN). |
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