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02
                                                               COMPUTER

                                                           NETWORKING









                                                                            Learning Objectives                             COMPUTER NETWORKING
                                                                            •  Computer Network
                                                                            •  Need for Computer Network
                                                                             •  Advantages of Computer Network
                                                                             •  Components of a Communication System
                                                                             •  Network Terminology
                                                                             •    Devices Required for a Network
                                                                             •  Types of Networks
                                 In our school's computer lab, we can        •    Topology                                17
                                share data with each  other. How             •    Network Architecture
                                                                             •    Wireless Networking Technology
                                are the computers connected?                  •    Protocol

                                 The computers are connected with

                                each other through a network.

                 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.

                 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 maybe  linked through

                 a cable, hub, switch, NIC (Network
                                                                                 Computer Network
                 Interface Card), modem or router.
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