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02 COMPUTER NETWORKING
Your Aim
to learn about:
Computer Network Need for Computer Network
Advantages of Computer Network Network Terminology
Components Required for a Network Types of Network
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
Computer Network
well as work independently. Each computer in a network is called a
node. The 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 17

