A wide area network (WAN) is the physical Internet. A WAN is a collection of different types of networks that are used to connect one location with another. The term “wide area” refers to the distance between the two locations and does not refer to how big or small either network may be.
A WLAN provides wireless connectivity over short to long distances with radio waves rather than traditional electrical network cabling. A WLAN extends already existing wired local area networks (LAN) to computers not attached to the LAN directly. The term ‘wireless’ denotes that the system does not require any wires connecting the computers or devices to the network. It uses radio signals for this purpose.
There are four main types of wireless local area networks: single-mode, …
