A Passive Hub is just a connector. It connects the wires coming from different hubs. An active hub acts as a multiport repeater. Passive hub will not regenerate the signal but active hub will regenerate the signal ....... so active hub is better.
When active hubs receive data signals, they amplify them before retransmitting them to the receiving node. Passive hubs on the other hand do not offer this function.
"Active" in this case means that it requires energy, to amplify the signal.
there are three types of hub which are following: 1. Active Hub. 2. Passive Hub 3. Hybrid Hub
in star topology , the central hub is called...... (i) active hub (ii) passive hub (iii) inactive hub (iv) live hub
manageable Hub is known as Intelligent each port can be configured by Network According to the reqiurment Network.
Passive Hubs These hubs are nothing more than point contacts for the wires that make up the physical network. An example of this would be a punchdown block that is a simple plastic, unpowered box used to plug network cables into it. Active Hubs Active hubs are a little smarter than the passive hubs we saw. All You might also come across the term "concentrators" which are basically active hubs, concentrating and strengthening a signal as it enters and exits the hub.
Passive hubs- do not amplify the electrical signal of incoming packets before broadcasting them out to the network.
function as a repeater
a switch
An active hub can act as a repeater hub. It may also work as an Ethernet hub, network hub, and a multiport repeater.
An active USB hub is a USB hub which has its own power supply. It will come with a DC power adaptor to power it. The USB system in your computer is capable of providing electrical power to devices which are plugged into it. When a large number of devices, or some particularly power-hungry devices are plugged into the USB system, it is possible to overexert this system. An active USB hub shores up this this power reducing the likelyhood of problems. A passive USB hub does not. Additionally, USB devices will often not work properly with more than 12 feet of cable. An active USB hub (or active USB extension cable) can help to overcome this limitation.
A freewheel hub dose not make the pedals go forward when the backwheel is turning, a track hub dose.
a passive hub does not regenerate the signal received only let it pass
Passive