What is a coaxial cable?

A coaxial cable is specifically designed for transmitting radio frequency (RF) signals, making it an ideal choice for various applications in telecommunications. The cable consists of a central conductor that transmits the data, surrounded by an insulating layer, a metallic shield that protects against electromagnetic interference, and an outer insulating layer. This construction allows coaxial cables to maintain signal integrity and reduce noise, thereby efficiently transmitting RF signals for television, internet, and other data services.

The other choices highlight different types of cables that serve distinct purposes. For instance, power transmission cables are designed to carry electrical power rather than data signals. Fiber optic cables transmit signals through light, enabling high-speed data communication that is distinct from the RF capabilities of coaxial cables. Regarding fixed LAN connections, while some may utilize coaxial cables, they are more commonly associated with twisted-pair cables or fiber optic cables, which are specifically designed for local area networks and provide other advantages in terms of speed and data capacity.