Computer Network: -
In a communication system
by which a computer is connected to another computer is called computer
network. In other words a Network is set of technologies-including hardware,
software and media that can be used to connect computers together, enabling
them to communicate, exchange information, and share resources in real time.
Usefulness: -
Network allows many users to
access shared data and programs almost instantly. When data and programs are
stored on a network and are shared, individual users can substantially reduce
the need of programs on there own computer. Networks open up new ways to
communicate, such as e-mail, instant messaging etc. By allowing users to share
expensive hardware resources such as printers, networks reduce the cost of
running an organization.
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