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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.
Computer Networking 7

