In this lesson: Explain the functions and basic requirements of a computer network.

Identify the origins of computer networking and the creation of the Internet.

What Is a Network?

In the fields of computer science and information technology, the term computer network refers to any connection between two or more devices that facilitates the exchange of information between the devices.

A network can be as small as two devices, such as transferring photos or music files between a smart phone and a computer, or it can include hundreds of devices that are connected to each other to share data and other resources.