What is the primary function of a repeater in a network?

The primary function of a repeater in a network is to extend range by amplifying and retransmitting signals. Repeaters are vital components in communication systems, especially in wired and wireless networks, where the strength of the signal can degrade over distance. By capturing the incoming signal, a repeater boosts its strength and retransmits it, allowing data to travel further without loss of integrity. This ensures that devices located far apart can maintain effective communication, enhancing the overall reach of the network.

Other options, such as increasing the speed of data transmission or serving as a firewall for security, do not accurately describe the function of a repeater; these tasks are typically handled by other network devices or technologies. Repeaters focus solely on signal strength and coverage rather than data speed or security measures.