JSS 2 WEEK THREE LESSON NOTE (ICT_323)

 




Jss2

TOPIC: COMPUTER NETWORK

Introduction

Networking refers to connecting two or more devices to allow communication between them with the purpose of sharing information and resources. Examples of these devices are computers, printers, routers hubs, modems and PDAs.

Computer Network

A computer network is a group of computers linked to each other that enables the computer to communicate with another computer and share their resources, data and applications.

TYPES OF COMPUTER NETWORK

A computer network is mainly of four types:

1.     PAN (Personal Area Network)

2.     LAN (Local Area Network)

3.     MAN (Metropolitan Area Network)

4.     WAN (Wide Area Network)

PAN

Personal Area Network is a network arranged with individual person typically within a range of 10 meters. It is used for connecting computer devices of personal use. 

LAN

Local Area Network is a group of computers connected to each other in a small area such as a building, office. It is used for connecting two or more personal computers through a communication medium such as a twisted pair, coaxial cable etc.

MAN

Metropolitan Area Network is a network that covers a larger geographic area by interconnecting different LAN to form a larger network.

WAN

Wide Area Network is a network that extends over a larger geographical area such as a state or countries. It is not limited to a single location but spans over a large geographical area through a telephone line, fiber optic cables or satellite links.

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