Which type of cable is often used for Ethernet networks?

Twisted pair cable, particularly Category 5e, Cat 6, or higher, is commonly used for Ethernet networks due to its ability to support high-speed data transmission over relatively short distances. These cables consist of pairs of insulated copper wires twisted together, which helps reduce electromagnetic interference and crosstalk from adjacent pairs and external sources. The transmission standards associated with these categories allow for varying bandwidths: Category 5e supports speeds up to 1 Gbps (Gigabit Ethernet) while Category 6 can support speeds up to 10 Gbps at shorter distances.

This type of cable is widely adopted because it is cost-effective, lightweight, and relatively easy to install compared to alternatives like fiber optic or coaxial cables. Fiber optic cables, while offering higher bandwidth and longer distance capabilities, are generally more expensive and require specialized installation techniques. Coaxial cables are also used in some network setups but are not as common for standard Ethernet applications. Flat ribbon cables are not typically used for Ethernet networks as they lack the necessary specifications for data transmission speeds and electrical characteristics required for Ethernet communication.