WAN – The phrase “wide area network” in a word is known as WAN. That wide ranging network works collectively with the help of hardware such as computers and related resources. Cisco has introduced a lot of devices such as modem and routers for WAN, protocols and technologies such as ATM, Cisco frame relay etc so to provide a better wide area network (WAN) environment.
What is network? A computer network in simple form can be consisted on just two computers that are allied to share available resources as variety of hardware, files and to correspond with each other. But in broad sense, this network can enclose thousands of computers in it because running a big business in traditional way can be a difficult task without a network and that provides an easy way to be in touch and cooperate with employees too. That means computer’s networking is referred to the assemblage of various kinds of hardware components plus computer’s interconnection with the help of communications mediums. The key purpose of networking is to allow the sharing of an organization’s resources as well as information.