HUB

HUB

IT IS VER IMPORTANT COMPONENT OF COMPUTER NETWORK FOR SHARING OF RESOURCES BETWEEN CLIENT COMPUTERS AND SERVER

Hub is a device for connecting multiple Ethernet devices together and making them act as a single network segment. It has multiple input/output(I/O) ports, in which a signal introduced at the input of any port appears at the output of every port except the original incoming. Hub works at the physical layer (layer 1) of the OSI model.^[1] The device is a form of multiport repeater. Repeater hubs also participate in collision detection, forwarding a jam signal to all ports if it detects a collision.

Hub may also come with a BNC and/or Attachment Unit Interface (AUI) connector to allow connection to legacy 10BASE2 or 10BASE5 network segments. The availability of low-priced network switches has largely rendered hubs obsolete but they are still seen in 20th century installations and more specialized applications.