Network interface
A computer network is a collection of digital devices interacting over a shared communication medium. A local area network (LAN) consists of a limited number of computers that might reside in a single physical location such as a home or office building. The connected computers, phones, and other digital devices in your home represent a LAN. Device connections within a LAN environment may use a wired interface, usually Ethernet, or a wireless interface, typically Wi-Fi.
Geographically separated computers and LANs communicate using a wide area network (WAN). WAN services are often provided by a telecommunication company such as a cable television provider or telephone company. Your home LAN most likely connects to the Internet via WAN services provided by your telephone or cable company.
Home and business network interface devices (called routers) provided by WAN service providers usually offer Ethernet and Wi-Fi options for connecting local devices to the...