Final answer:
Broadcast links like cable TV require access to broadcasting rights, with signals sent via coaxial or fiber optic cables, allowing for tailored programming.
Step-by-step explanation:
In the context of broadcast links, such as those used in cable television, access to broadcasting rights is needed. Cable TV providers send signals to homes through coaxial or fiber optic cables. Unlike traditional over-the-air broadcasting, cable networks do not require local affiliates to operate. Instead, they purchase broadcasting rights directly for the cable stations that they select based on their audience's preferences. This model enables cable networks to specialize in specific types of programming, providing a diverse range of channels and shows tailored to different interests.