In case you were afraid to ask
Computer Networks Explained | Cisco CCNA 200-301
A computer network is a set of interconnected computers that are connected wirelessly or by wires to share media or data. The computers on a network, also called nodes, can share resources, including access to the Internet, printers, and file servers, or allow electronic communication.
A computer network consists of at least two computers that may be connected to each other by radio waves, cables, satellites, telephone lines, or infrared light beams. There are other media or devices that help the different devices communicate, such as a switch, router, bridge, or hub, which are known as network devices.
All of this hardware and software makes computer networking possible, allowing interconnected devices to share information, data, resources, and other network devices.