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CHAPTER 1 3 INFORMATIC PRACTICES XII WEB.pdf


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COMPUTER NETWORKING

Networking - a brief overview
A computer network is a collection of interconnected computers and other devices which
are able to communicate with each other. In this context, the term interconnected means
that there exists a path through which data can be transmitted from one
computer/device to another.
A computer network is a collection of interconnected computers and other
devices which are able to communicate with each other and share hardware
and software resources.
Why do we have computer networks? Are there any advantages of networked computers
over stand alone computers? Yes, there are many. A few of these advantages are:


Resource Sharing



Cost saving



Collaborative user interaction



Time saving



Increased storage

Let us discuss these advantages in some details.
Resource Sharing:
In a networked computer lab when print command is given on one computer the
document may be printed by the printer which is attached to some other computer. This
printer is able to print documents from multiple users on the network. It means that the
printer is being shared by more than one users. This is an example of resource sharing,
and this is possible only when the computers are interconnected to form a network.
Similarly other resources like Hard Disk, DVD Drive, and Scanner etc. can also be shared
on a computer network. Software resources like Application Softwares, Anti-Virus tools
etc. can also be shared on computer networks. You can very easily conclude that this
resource sharing also leads to cost-saving.

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