Hub

Hubs act as the center of a "star" topology. They have between 4 and 20+ ports. Internally, hubs are "dumb" devices that just resend information they receive. All devices attached utilize a part of the rated speed, be it 10 or 100Mbit/sec. Hubs know nothing about a packet's destination. Therefore, hubs are generally the cheapest connecting device in a STAR topography, although for a busier network, switches are more robust.

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