Star Topology

In this type of network topology, all the nodes are connected individually to one common hub. The transmission stations are connected to the central node in such a manner that the design resembles the shape of a star, and hence, the name.

The star topology design resembles a bicycle wheel with spokes radiating from the center. In this case, data exchange can only be carried out indirectly via the central node to which all the other nodes are connected.

Advantages

It is very easy to install and manage the star network topology, as it is the simplest of the lot when it comes to functionality.

It is easy to troubleshoot this network type, as all computers are dependent on the central hub which invariably means that any problem which leaves the network inoperable can be traced to the central hub.

In star network topology, data packets don't have to make their way through various nodes. The fact that there is no data collision adds to its performance by making data transfer considerably fast.

Also, the fact that data packets only make it through three different points ensures that the data is safe.

As the nodes are not connected to each other, any problem in one particular node doesn't hamper the performance of other nodes in the network.

Adding new machines or replacing the old ones is easy in this network topology, as disruption of the entire network is not required to facilitate the same.

Disadvantages

The foremost problem with the star network topology is the fact that it is highly dependent on the functioning of the central hub.

The size of the network is dependent on how many connections can be made to the hub. As the number of connections increases, so does the size, and thus, the infrastructure.

If you opt for the star topology, you will require more cable than what you would if you opt for the linear bus topology. So, the expenses incurred on the former will also be relatively high.

The performance of the entire network is directly dependent on the performance of the hub. If the server is slow, it will cause the entire network to slow down.

If one of the nodes utilizes a significant portion of the central hub's processing capability, it will reflect on the performance of other nodes.

If the central hub is compromised, it will leave the entire network vulnerable.