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A hub, a switch, and a router are fundamental networking devices, but they operate at different layers of the network and serve distinct purposes in data communication. A hub is the simplest device, functioning at the physical layer of the OSI model. It merely repeats data received on one port to all other connected ports without any form of data filtering or addressing. This leads ______ _____ ______ ______ ______ __________ _______.
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