There are many types of networks for communicating and data sharing. These include LAN, WLAN, WAN, MAN, SAN, and CAN. Every type have different strengths. LAN and WAN are originally categorized of its area networks.

LAN (local area network):
LAN connects the computers in a shorter distance only. It has the scope for one building or room, mainly used in homes or small business units. Its management and control is very easy.

WAN (wide area network): WAN is for large distances. WAN is a geographically dispersed all over the globe. The router maintains LAN address and WAN address. Wan is not an individual asset but exists under collective or distributed ownership and management

WLAN (Wireless Local Area Network): It is the LAN based on wireless connection

MAN (Metropolitan Area Network): the network spanning area larger than the LAN but smaller than the WAN, such as city networks

CAM (campus area network): this is the multiples of LAN but smaller than MAN

SAN (Storage area network): it connects the servers to transfer the data

While LAN and WAN are by far the most popular networks.