Computer Networks

 

Computer Networks
Computer networks are collection of computer hardware & software that are interconnected and therefore help users to work togather .It connects computers , printers , scanners & cameras. Using computer network , user can send electronic massages to each other.
Ex : The best example of computer network is Internet.
Use  of computer networks :       

❶ Resource sharing

❷ For providing high reliability

❸ To save money

❹ Provide a powerful communication medium

❺ to remote information

❻ Interactive entertainment     

There are two types of computer network architectures :
Such as –

❶ Client server network/model

❷ Peer to peer network /model

Client : The individual workstations in the network are called as clients.

Server : The central computer which allows the client to access its software and database is called as the  server . server is more powerful than clients.

Client server model :
A client server model is a network in which the shared files and applications are stored in the server but network users ( client ) can still store files on their individual pcs.



Peer to peer ( P2P ) network :
P2P networks are defined as lack of central control over the network.There is no servers in p2p network. User simply share disk space & resources such as printer & faxes.

Difference between client server network to peer to peer network :

Client server model	Peer to peer network
Server has central ability while clients does not.	All computers have equal ability.
Higher cabling cost	Cheaper cabling cost
It is used in small and large networks .	Normally used in small networks less than 10 computer
Easy to manage	Hard to manage
Install software in the server while the clients share the software .	Install software to every  computer
One powerful computer acts as server	No server is needed.

Forked by : Zahirul Islam

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