Networks come in various forms, each tailored to specific needs and scales, from local area networks (LANs) that connect devices within a single location to wide area networks (WANs) that span across large geographical areas.

Devices may use any of several methods to connect to these (and other kinds of) networks. Three basic types of network connections exist: Point-to-point connections allow one device to communicate with one other device. For example, two phones may pair with each other to exchange contact information or pictures.

Network devices can be as simple as computers or smartphones that connect into a network. Larger networks use devices like routers and switches to create the underlying network infrastructure. Not all networks are the same, however. Several types of networks are available, and each exists to support the devices, size and location of the system.

It is a collection of two or more computer systems that are linked together. A network connection can be established using either cable or wireless media. Hardware and software are used to connect computers and tools in any network.