By andrew hague
This stands for local area network (LAN) evolved as a means to interconnect a variety of computing platforms in a high-speed, reliable, and robust environment. First and foremost, a LAN is a network. Furthermore, the network serves as a communications infrastructure for computerized systems. This includes computers, printers, storage systems, and any other device that has a processor, and an ability and need to communicate with another system.
This stands for wide area network often referred to as a WAN, is a communications network that makes use of existing technology to connect local computer networks into a larger working network that may cover both national and international locations. This is in contrast to both the local area network and the metropolitan area network, which provides communication within a restricted geographic area.