A Wide Area Network (WAN) covers large geographical area such as country. Typical area covered by WAN is ranging from 100 km to 1000 km. WAN is collection of LAN and MAN. Where number of network computer systems and networking devices connected to each other. Computer systems are connected in LAN (also called as subnet), these LANs are connected by using some intermediate switching devices. The message travels from one subnet to another subnet and reach to its intended recipient.
WAN contain high bandwidth. It has lower data rate as compared to LAN and MAN. It also having more transmission errors. WANs can be owned by public or private authority. The implementation of WAN is done by ISPs (Internet Service Providers).
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