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"A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs). Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites. A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs)."