Hubs function in a very half-duplex design. The 50 %-duplex design raises protection and privateness issues as it can't safeguard or quarantine site visitors. In addition it presents a functional difficulty when it comes to targeted traffic administration: Devices on the hub purpose to be a network segment and share a collision domain.

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A hub can be a multi-port repeater. A hub connects multiple wires coming from diverse branches, for example, the connector in star topology which connects diverse stations. Hubs simply cannot filter info, so facts packets are sent to all linked equipment.