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Chapter Profile
                                                                                         Chapter Profile
                  1                                                                Computer Network

                                                                                     Need for Computer Network
                                                                                          Advantages of Computer Network

                                                                                        Network Terminology


                                  Computer                                                Components Required for a Network
                                                                                           Types of Network

                               Networking                                                    Topology
                                                                                               Network Architecture
                                                                                                 Wireless Networking Technology
                                                                                                  Protocol









                 The process of connecting computers and peripheral devices with each other, so that they can
                 exchange data and resources is called computer networking. To do networking, various types of
                 hardware devices, protocols and software are required.

                        COMPUTER NETWORK

                 The computer network is a system of interconnected computers which
                 can communicate with each other. It allows us to share the resources

                 such as computers and peripherals.
                 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
                                                                                                  Computer Network
                 computers in the network maybe linked through the cable, hub, switch,
                 NIC (Network Interface Card), modem or router. There are different kinds of computer networks

                 that work in different ways. Networks may be very small and simple as in a room or they may be
                 complex as a global network like the Internet. There may be wired or wireless connection between
                 computers on the network.


                        NEED FOR COMPUTER NETWORK

                 Computers and other devices connected on a network help in:

                     Resource Sharing: It help the users share files and hardware devices such as printers, scanners, etc.
                     Communication: It helps us communicate with others through e-mail, video conference, instant
                    messaging, etc.
                     Data Security: Networks enable the implementation of security measures such as firewalls,
                    encryption,  and  access controls  to  protect  sensitive  information  from  unauthorised  access,

                    interception, and tampering.









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