There are several types of cables used for different purposes. The most common types include coaxial cables, which are often used for cable television and internet connections, and fiber optic cables, which transmit data as light signals, providing high-speed internet. Twisted pair cables are widely used in telephone and computer networks, consisting of pairs of wires twisted together to reduce interference. Another important type is the HDMI cable, which connects devices like televisions and computers to transmit high-definition video and audio. USB cables are used for connecting various devices, such as smartphones and printers, allowing for data transfer and charging. Each cable type serves a specific function based on its design and materials.