What is WAN and LAN ?

local area network is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. By contrast, a wide area network not only covers a larger geographic distance, but also generally involves leased telecommunication circuits.wide area network is a telecommunications network that extends over a large geographic area for the primary purpose of computer networking. Wide area networks are often established with leased telecommunication circuits

A LAN port is used to connect the computers and other client machines. a WAN port is wired to an external network like the Internet

Explanation:

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