What type of cable is typically used for Ethernet networking?

Twisted pair cable is the standard type of cable used for Ethernet networking due to its effectiveness in transmitting data for both speeds and distances common in local area networks (LANs). This cable consists of pairs of insulated copper wires twisted together to reduce electromagnetic interference and crosstalk from adjacent pairs.

There are two main categories of twisted pair cables used in Ethernet: Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP). UTP is widely used because it is less expensive and easy to install, and it is suitable for most networking environments, capable of supporting Ethernet standards such as 10Base-T, 100Base-TX, and 1000Base-T.

Coaxial cable, while historically utilized in networking such as for cable Internet, is not commonly used in modern Ethernet applications. Fiber optic cable is great for high-speed internet and long-distance communication but is not the primary choice for standard Ethernet connectivity due to its higher cost and complexity in installation. HDMI cable is intended for transmitting high-definition video and audio signals, making it irrelevant for Ethernet networking. Thus, twisted pair cable remains the primary choice for connecting devices in an Ethernet network.