- Hub is a small, simple, inexpensive electronic device that joins multiple computers together and form a single network segment.
- On this segment, all computers can communicate directly with each other.
- Original Ethernet hubs offered only 10Mbps rated speed, newer type of hubs add 100Mbps.
Types of Hub:
1. Active Hub:
- This hub can amplify or regenerate the information signal.
- It is also amplifies the incoming signal as well as forward it to multiple devices.
- This Hub also known as multiport repeater.
2. Passive Hub:
- It works like a simple bridge.
- It is used for just creating a connection between various devices.
- It doesn't have the ability to amplify or regenerate any incoming signal.
- It receives signal and then forward it to multiple devices.
3. Intelligent Hub:
- It can perform tasks of both active and passive hubs.
- It can perform other tasks like bridging and routing.
- It increases the speed and effectiveness of total network. Thus makes the performance of whole network fast and efficient.
Applications:
- It is used to create small home network.
- It is used for monitoring the networks.
- Hubs are used in organization and computer labs for connectivity.
- Less expensive.
- Speed is high.
- It can modulate the signal of the cable, if needed.
Disadvantages:
- It can't control traffic of data cause it receive all attachment post.
- It have limited port to connect client.
- It works as a query system. When NIC send a work to hub then hub make this work pending and process one by one so it's time consuming.
My notes images:
