Which device regenerates signals to extend network range at the Physical Layer?

As data moves through cables over long distances, the signal can become weak or noisy. A repeater helps by cleaning and boosting the signal before sending it on. This allows the network to cover longer distances without losing data quality.

Key points about Repeaters:

• Operates at the Physical Layer (Layer 1)


• Regenerates and strengthens weak signals


• Used to extend the range of a network


• Does not filter, route, or understand data — just boosts the signal

Interview Tip: If asked about Physical Layer devices or how networks cover large areas, you can mention repeaters as devices that help by boosting signals.

Conclusion: The repeater is a simple but important device at the Physical Layer that ensures data can travel longer distances without loss by regenerating signals.