Cable systems are networks that transmit data, television, and internet services through cables. These systems typically use coaxial or fiber-optic cables to deliver signals from a central location to homes and businesses. The infrastructure includes various components like cable modems, set-top boxes, and amplifiers to ensure quality service. In addition to providing entertainment and internet access, cable systems can also offer telephone services. They operate by connecting to a headend, where signals are processed and distributed. This technology allows for high-speed data transfer and a wide range of channels, making it a popular choice for consumers.