The letter for the day in the Networking ABC's is the letter "W".  WAP, Web, Windows, Wireless, and WMI are common W words but for today's word I chose the one that makes disaster recovery as well as localized service possible: WAN or Wide Area Network.

"W" is for WAN

WAN

Pronounced: Wahn

A WAN, or Wide Area Network, is a computer network whose communications links cross metropolitan, regional, or national boundaries.  WANs are used to connect LANs (or Local Area Networks) and other types of networks together, so that users and computers in one location can communicate with users and computers in other locations.  The largest and most well-known example of a WAN is the Internet.