•A computer network is
a system for communicating between two or more computers and associated
devices. It is an interconnection of computers for the purposes of sharing
information and resources.
•A popular
example of a computer network is the internet, which allows millions of users
to share information
•Computer
networks can be classified according to their size:
–Personal
area network (PAN)
–Local
area network (LAN)
–Metropolitan
area network (MAN)
–Wide area
network (WAN)
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