Network Architecture.

Local Area Network (LAN)

A Local Area Network is a computer network that covering a small physical area, like a home, office, or small group of buildings, such as a school, or an airport. The linking can be done by cable that carries optical fiber or copper.

Metropolitan Area Network (MAN)

The term metropolitan area network is not used often anymore. It refers to a network that exists within a single city or metropolitan area. If we had two different buildings within a city that were connected together, it would be considered a Metropolitan Area Network.

Wide Area Network (WAN)

A wide area network (WAN) spans multiple geographic locations and is typically made up of multiple LANs. We can say ‘a network that crosses local, regional, and international boundaries.’ WANs are created when the users of one Local Area Network (LAN) need frequent access to the resources on another LAN. Connections can be made over a variety of media and using a variety of different protocols in WAN.

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