Cable networks are television channels that are delivered to viewers through coaxial or fiber-optic cables. Unlike traditional broadcast television, which uses airwaves, cable networks require a subscription service to access a variety of channels. These networks often provide a wide range of programming, including movies, sports, news, and original series. Many popular cable networks, such as CNN, ESPN, and HBO, cater to different interests and demographics. Viewers typically receive these channels through a cable provider, which packages them into various tiers or bundles. This allows subscribers to choose the channels that best fit their viewing preferences.