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A network hub or concentrator is a device for connecting
multiple twisted pair or fiber optic Ethernet devices together, making them act
as a single network segment.
The device is a form of multiport repeater also
responsible for forwarding a jam signal to all ports if it detects a collision.
the main reason for purchasing hubs rather than switches was its price The availability of low-priced
network switches has largely rendered hubs obsolete but they are still seen in
older installations and more specialized applications.
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