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Hub

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Hub
A device that contains multiple independent but connected modules of network and internetworking equipment that form the center of a hub-and-spoke topology. Hubs that repeat the signals that are sent to them are called active hubs. Hubs that do not repeat the signal and merely split the signal sent to them are called passive hubs. In some cases, hub may also refer to a repeater, bridge, switch, or any combination of these.
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