Define the function of repeaters, hubs, and switches in computer network.

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Accepted Answer

A repeater receives signals that have become weak or faded after traveling some distance, amplifies them into strong signals, and retransmits them so they can travel effectively over long distances without loss - it is used to extend network coverage. A hub is a simple device that connects multiple devices and broadcasts data signals to all of them at once; it operates on the physical layer and is not intelligent, so all devices receive data but only the intended device uses it. A switch links multiple devices on a LAN and transfers data frames only to the specific intended device by evaluating the destination address, operating on the data link layer using full-duplex mode, making the network faster and more efficient than with a hub.