Wide Area Networks
Wide Area Network (WAN) is basically a computer network that covers multiple distance areas that may spread across the globe. Usually, WANS connect several smaller networks including Metro Area Networks (MANs) and Local Area networks (LAN) (Gu, 2007, p. 117). Markedly, the Internet is the most popular WAN in the world.
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A packet switching setup is ideal because networks usually have connections into the carrier’s network. Hence, the carrier can build virtual circuits in customer’s sites where packets of data are carried from one to the other within the network. Markedly, circuit switching supports the establishment of data connections when needed, and later ended when communication is absolute. Ideally, a normal telephone line works in a similar manner to the WAN technology.
Generally, WAN technologies operate at the lower three levels of the OSI indication model such as, the network layer, the data link layer, and the physical layer. Some of the major technologies used in WAN are X.25, SONNET, ATM, Frame Relay, and PPP (Kelly, 2003, p. 88).
Gu, Y., & Grossman, R. L. (2007). UDT: UDP-based data transfer for high-speed wide area networks. Computer Networks, 51(7), 1777-1799.
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