Hub Types

All hubs provide us with various different facilities.

They are divided into four different groups according to these facilities.
Active
These amplify or regenerate the signal.
They also connect segments to ensure all the nodes see the signals.
They have their own power supply.

Passive
All they do is connect the network segments together.
They provide no amplification of signal of any sort.
They do not have their own power supply as well.
Passive hubs are not used in Ethernet networks.

Smart hubs
They give us the same facilities as active hubs.
However they offer us with management and monitoring capabilities.
They can also be used to locate and identify problems on the network.