hey can anyone write a preface for my project. Its entitled " computer Networks" .
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Modern world scenario is ever changing. Data Communication and network have changed the way business and other daily affair works. Now, they highly rely on computer networks and internetwork.
A set of devices often mentioned as nodes connected by media link is called a Network.
A node can be a device which is capable of sending or receiving data generated by other nodes on the network like a computer, printer etc. These links connecting the devices are called Communication
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