A network cable is a type of cable used to connect devices within a computer network. It allows data to be transmitted between computers, routers, switches, and other network devices. Common types of network cables include Ethernet cables, which are widely used for local area networks (LANs), and fiber optic cables, which can transmit data over longer distances at higher speeds. Network cables come in various categories, such as Cat5e, Cat6, and Cat6a, each offering different performance levels. The choice of cable depends on the network's speed requirements and the distance between devices. Proper installation and maintenance of network cables are essential for ensuring reliable connectivity.