Question

I need a unique answer, NO COPY PLEASE!

Let us suppose we have 9 devices in a network. Explain what happens when a connection fails in the network arranged in the form of a:

• mesh topology
• star topology (not counting the hub)
• bus topology
• ring topology

Answer 1

In case of Mesh Topology:

1:All the devices are connected to every other device with separate cables.

2.There are dedicated lines from each device to every other device.

3.Now, supposing that a connection link fails or a device stops working, the network is expected to remain unaffected since the centralized device is functioning properly. Only the direct connection links between the failed device and the other devices stops functioning and the number of devices in the network is reduced by 1.

Below is a representation of a mesh topology having 4 devices for better understanding. I tried to make it for 9 devices but it was looking very messy so, I thought 4 devices diagram would be better to understand.

In case of Star Topology:

1. All the devices are connected through a centralized device, mainly a hub,switch or a bridge.

2.All the information to be transferred has to pass through the centralized device before reaching the destination.

3.There are no dedicated lines from each device to every other device.

4.Now, supposing that a connection link fails or a device stops working (except the centralized device) , the network is expected to remain unaffected since the centralized device is functioning properly and failed device has no role to play in data transfer between two other devices in the network since the data t . Only the data transfer to and from the failed device will not be possible and the number of devices in the network would be reduced by 1.

Below is a representation of a Star topology having 9 devices for better understanding.

In case of Bus Topology:

1. All the devices are connected to a common cable line called the trunk cable.

2.There are no dedicated lines each device to every other device.

3.Now, supposing that a connection link fails or a device stops working, the network is expected to remain unaffected since the trunk cable is the one that is the medium for data transfer between devices. Hence, as long as the trunk cable remains intact, the network remains unaffected. Only the data transfer to and from the failed device will not be possible and the number of devices in the network would be reduced by 1.

Below is a representation of a mesh topology having 9 devices for better understanding.

In case of Ring Topology:

1.All the devices are connected in a circular form.

2.Each device is connected to two other devices to form a circle.

3. The movement of token (data carrier) is always serially and it cannot skip any device.

3.Now, supposing that a connection link fails or a device stops working, the whole network is expected to break. There won't be any data transfer possible if any device or connection fails since the token has to move serially and if there is a gap between two devices, the flow of data stops there and the whole network stops functioning.

Below is a representation of a mesh topology having 9 devices for better understanding.

Hope my answer was very easy to understand and now, you will not be having no doubts related to failure of a network topology. Feel free to ask any doubt in the comment section if required.