Coaxial cable is a type of electrical cable that consists of a central conductor, an insulating layer, a metallic shield, and an outer insulating layer. It is designed to transmit radio frequency signals with minimal interference, making it ideal for applications like television and internet connections. The structure helps protect the signal from external noise and ensures reliable data transmission. Commonly used in both residential and commercial settings, coaxial cable is known for its durability and efficiency. It can carry a wide range of frequencies, which is why it is often used in cable television systems and satellite communications.