FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Typically, a router or other multifunction device is used to connect a LAN to a WAN. Enterprise WANs allow users to share access to applications, services and other centrally located resources.

Detailed explanation-2: -Most wireless routers have at least two ports: one WAN port and one or more LAN ports. In all homes and most small businesses, the WAN port connects to a high-speed modem, like a DSL or cable modem, which in turn connects the router to the Internet.

Detailed explanation-3: -The Internet is a worldwide collection of interconnected networks (internetworks or internet for short). Figure 1-18 one way to view the Internet as a collection of interconnected LANs and WANs. Some of the LAN examples are connected to each other through a WAN connection. WANs are then connected to each other.

Detailed explanation-4: -Local-area network (LAN): A network infrastructure that provides access to users and end devices in a small geographical area. Wide-area network (WAN): A network infrastructure that provides access to other networks over a wide geographical area.