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1                        Computer Networking
















                     Let’s surf

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





                  Let’s PLug-in                                                                 Century   #Critical Thinking
                                                                                                   21 st
                                                                                                      #Communication
                                                                                                  Skills
                    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 maybe linked through a cable,
                 hub, switch, NIC (Network Interface Card), modem or router.






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