What is a NETWORK? A set of devices (commonly known as nodes) which is connected by a communication link is known as a network. A node is generally a device (such as computer, printer etc.) which can send and receive data generated by other nodes on the network. A network must be able to meet certain important characteristics such as performance, reliability and security . Need For Networking To share computer files: Networks provide a very effective way to share files with different users. Like in order to share a common file with different departments of an organization, we can place the file on the network so that it can be used by all the departments. To share computer peripheral: Network enables us to share certain computer devices with one another which may be very costly/expensive. E.g.-Laser printer etc. To enable communication: Networks allow unlike computers to communication with each other. A computer with different operating syste
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