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    1                        Computer Networking

                         Let’s surf

                             Computer Network                                Need for Computer Network
                             Advantages of Computer Network                  Components of a Network
                             Network Terminologies                           Devices Required for a Network
                             Types of Networks                               Network Architecture
                             Wireless Networking Technology                  Protocol

                      Let’s PLug-in                                                                        Critical Thinking

                        Write any four methods of communication that you can think of.

                        1.  ____________________________                  2.  ____________________________

                        3.  ____________________________                  4.  ____________________________

                     The process  of connecting  computers  and peripheral devices  with each other, so that  they  can
                     exchange data is called computer networking. Various hardware devices, protocols and software are

                     required for networking. In this chapter, you are going to learn about networking and the concepts
                     related to computer networking.

                            COMPUTER NETWORK

                     A computer network is a group of interconnected computer systems and other computing devices.
                     There are different kinds of computer networks that work in different ways. Networks may be very
                     small and simple or they may be complex as a global network like the Internet. There may be wired or
                     wireless connection between computers on the network.

                     The computers on the network can communicate with each other as well as work independently. Each
                     computer in a network is called a node. The computers in the network may be linked through a cable,
                     hub, switch, NIC (Network Interface Card), modem or router.

                                                                                                  Computer Networking  7

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