In a star network, each node (computer or other device) is directly connected to the central computer or Hub that provides connection points for nodes on the network. The star topology is the most common topology in use today. In star network, information or data is communicated from one computer to another through Hub. This form of network configuration looks like a star as shown in figure below.
Advantages
The main advantages of star topology are:
- It is easy to install and to maintain.
- You can easily add and remove nodes to and from the network without affecting the network.
- If any node fails, other nodes are not affected.
Disadvantages
The main disadvantages of star topology are:
- This type of network depends upon the central Hub. If Hub fails the entire network is failed.
- Each computer is directly connected to the Hub through a cable, so it becomes more costly.
Source : http://www.free-computer-tips.info
