communication system
What is a WAN? A Wide Area Network (WAN) is a computer network used to exchange information over a wide geographical area. It can be situated within several countries or even worldwide. Larger than a LAN, it can use phone lines or satellites as transmission media. In some cases, linking together some LANs forms a WAN. What is a WAN? A Wide Area Network (WAN) is a computer network used to exchange information over a wide geographical area.