Advantages or Disadvantages of topologies.

                      =>  Bus Topology  <=

Advantages of bus topology-

1. It is very easy to set up, handle.

2. It is widely used in small network.

3. It set up cost is very less.

Disadvantages of bus topology-

1. It transmission speed depends on number of nodes(systems). because nodes increase the traffic load on bus and reduce efficiency of network.

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2. It topology depend on central bus. So if any fault generates in the bus leads to network failure.

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3. Bus topology is not much better in the case of security reason. because the data which is transmitted from any node(system) has been travel through every node. 

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                       => Ring Topology <=

Advantages of ring topology-

1. In this topology central server is not required.

because in ring topology the data being transmitted between two nodes.

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2. It gives equal access speed to the every resource.

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3. The uni-direction ring topology provides very high speed of data transmission.

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4. The maintenance of ring topology is easy then bus.

Disadvantages of ring topology-

1. In this topology if any node get damaged or breakdown then all systems that are connected to this damage system are get effected.

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2. The changes of nodes in network effect on the whole network's performance.

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3. In this topology data sent from one node to another has to pass through intermediate nodes.This thing makes the transmission slow.

           => Mesh Topology <=

Advantages of mesh topology-

1. In this topology the failure of single node does not cause the whole network to fail.

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2. It efficiency is not dependent on the number of nodes.

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3. We can easily identify the fault in this topology because all the nodes in this pattern are connected one another point to point.

Disadvantages of mesh topology-

1. This topology is very costly.because a lot of cabling is required.

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2.The maintenance is very difficult. 

                =>Star Topology<=

Advantages of star topology -

1.In this topology if any one cable or node fail then all the other devices will not be effected.

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2. The speed of data transmission is very fast.

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3.We can easily add and remove nodes very easily in it.

Disadvantages of star topology-

1. In this topology we need extra hardware like switches or hubs.

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2. If any switch or hub fails, then all the devices connected to it, will be lost network connection.

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3. The set up cost of it is expensive.