Question: Repeater operates in which layer of the OSI model

Answer:

A repeater operates at the physical layer (Layer 1) of the OSI (Open Systems Interconnection) model. The primary function of a repeater is to amplify and regenerate signals that have weakened over long distances. It receives a weak signal, cleans it up, and retransmits it to extend the reach of the network. A repeater does not perform any processing or make any decisions based on the data being transmitted; it simply boosts the signal to ensure it can travel further without degradation.