Give two examples of models used to represent computer networks.

Two commonly used models in computer networking are the OSI 7 Layer Reference Model and the TCP/IP model.

What is a network protocol?

In computer networking, a protocol is a set of rules which define the language devices use to communicate with each other.

Define WAN

WAN stands for Wide Area Network. A WAN connects devices over long distances.

Define LAN

LAN stands for Local Area Network. A LAN connects devices in a relatively small physical area such as a room or building.