Introduction To Wide Area Networks

Introduction To Wide Area Networks
A large number of computer can be connected together over a LAN and work extremely efficiently. Now let us look at the task of connecting options where one computer or LAN which is situated far away for example in another city country or continent it is called wan.
We have already seen that the network card or lan cannot achieve this connection over long distances due to the limitation of connectivity distances. The simplest device that a pc can use to establish communications over long distances is a modem card provided that both locations have a telephone line available. However the main disadvantage of a modem card is the limitation on the data transfers rate of data.
There were also developments underway in networking technology Ethernet linked computers on local and wide area network and so made it much easier to connect them The invention of Ethernet created an enormous community of network users who for the first time didn't have to be engineers to get their computer to work in a networked environment.
Remote Ethernet local area networks (LAN) at universities were able to use arpaanet hubs to connect to other remote Lans at universities thousands of miles away This way a vital advance in the evolution of the internet.
Ethernet is a LAN protocol development by Xerox corporation in cooperation with Dec and Intel in 1976
The invention spawned a host of new business opportunities from cables to routers and network black boxes of all kinds.
The availability of global computer network and computer communications has made it possible for people to work together as a group even when
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