Final answer:
A repeater is used to extend a LAN by amplifying and retransmitting signals. It operates on the physical layer of the OSI model and is crucial for maintaining signal strength over extended distances.Repeaters work on the physical layer of the OSI model and do not filter data; they simply regenerate the incoming electrical signals, cleaning and boosting them for further transmission.
Step-by-step explanation:
A repeater is an analog hardware device used to extend a LAN. It amplifies and sends all incoming signals to the other side, which can help in maintaining signal strength over longer distances or in a larger network. Repeaters work on the physical layer of the OSI model and do not filter data; they simply regenerate the incoming electrical signals, cleaning and boosting them for further transmission.