What network component is used to extend the distance of the signal when transmitting over the normal specified distance?

The correct choice is a repeater because it is specifically designed to extend the range of a network by regenerating and amplifying signals. When data is transmitted over a network, especially over long distances, the signal can degrade due to loss or interference. A repeater receives this weakened signal, boosts it, and then retransmits it, effectively enabling the signal to cover greater distances without loss of quality.

This function is crucial in maintaining the integrity of data transmission, particularly in large networks or environments where distances between network devices exceed the normal operational range. The use of repeaters helps ensure that users can connect to the network reliably, even if they are located far from the source of the signal.

In contrast, other options like routers, modems, and switches serve different purposes in a network. Routers direct data between different networks, modems convert digital signals to analog signals (and vice versa) for communication over telephone lines or cable systems, and switches connect devices within the same network segment, facilitating local area network (LAN) communication rather than extending signal distance.