Resource sharing : Programs, equipment and data available to anyone on the network can be shared without regard to the physical location of resource and the user .
High reliability : Alternative sources of resource supply provide high reliability ., For example, files could be placed on two or three computers, so if one of them is unavailable due to a hardware failure, the other copies could be used . In addition, for presence of multiple CPUs, if one goes down the other may be able to like over its work .
Salability : Computer network provides ability to increase system performance gradually as the workload grows just by adding more processor in the network .
Communication medium : A computer network provides a powerful communication medium among widely separated people. For example, it is easy for two or more people who live far apart to write a report using a computer network .
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