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A hub is any sort of networking gear that has no intelligence about the information passing through it. It will not inspect packets for routing information, a packet that arrives at one port of the hub will be re-issued on all ports of the hub. There are smart hubs that have internal intelligence, but that is usually limited to the ability to enable and disable specific ports and divide one hub into a number of virtual hubs; though some also have the ability to count incoming packets on each port, and some have diagnostic abilities.

Hubs are most often seen with 10BaseT and 100BaseT systems, where they are used to turn the bus topology of the network into a star topology. Other systems that are inherently a star topology may also have hubs of some sort; a classic example is the older ArcNet and TokenRing.

Currently, use of a switch or a router is far more common. These inspect packets passing through them, and route them only to the machines that they have been sent to.

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16y ago
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14y ago

There are two types of HUBs : Active HUB & Passive HUB.

Active HUB: Uses external power supply to amplify signals.

Passive HUB: Doesn't uses Power supply & is used to extend existing Collision Domain (Group of network devices that share common common channel & listen to every communication made onto channel).

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Q: What are the different types of hubs?
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