What is Network?

In information technalogy transfering some data from one place to other place is done with
the any connected network.There are diffrent type of networks.

Local Are Network (LAN): In local are network micro computers are attached with one an other.

But local area network is a limited network like in a office if there are many computers

available ,or in a Internet cafe,more then one computer are attached with one and another
by the local cable,then this network is called local area network.There are two types of local
area networks.

i:- Server Base: In server base network one pc do the work of administrator and other computers
    worked as a clainet.
  
ii:- Pair Base: In pair to pair network every pc do the work of server and also client.In this
                network the speed of work increases because its directly send and recive inforamation.


2: Wide Area Network: This is the second type of network.In this type of network in which
all computers are attached through the satelite system.It is not a limited network it range is
much wide.With the help of this network we can connect with the whole world.Wirless media is
used in this network,wirless media is used to send and recive data in the form of frequency.
Local cable is not required to connect it.

3: Metropolitan Area Network: This is the third type of network ,it is similar to the wide area
network.But the diffrence is between WAN and MAN is that,Metroplitan net work is not as much wide
as Wan area network is it.MAN is limited to one city to another city or one country to an other
country.It also sends and recive data in the form of frequency.In metropolitan area network is
multiple system is used in which the server connected by the wirless system and the clients are
connected by the local cable.