Basics of computer networks - part -1

Computer network consists of group or (number of individual computers) of computers and devices which are connected with each other

computer networks can be used for many purpose:

1. share files and folders,data and information.

2. sharing hard ware resources such as network printer.

3. sharing software as many users connected to network run the same application program.

network can be divide into two main types:

1. client-server model

2. peer-to-peer model 

client/server is a configuration of the computer network that includes a server and one or more clients.

peer-to-peer is a communications model in which each party has the same capabilities and either party can initiate a communication session

computer networks are divided into LAN, MAN, and WAN depending on the geopraphical coverage area.

LAN is a small network and easy to create

WAN covers a wide geographical area which includes multiple computers or LAN's

networks are are widely used in different fields like financial institutions,communication services and internet services like E-mails.

internet is a global communication system where computer networks are interconnected which uses TCP/IP (Transmission Control Protocol/Internet Protocol)

electronic mail is a computer based method of sending/receiving messages from one computer user to another

to exchange information through email,you need an email client and an email server to which the client is connected.