Computer Science - Networking - Discussion

37. 

In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.

[A]. ring
[B]. bus
[C]. star
[D]. mesh
[E]. None of the above

Answer: Option D

Explanation:

No answer description available for this question.

James said: (Nov 3, 2016)  
Why? Please, Can anyone explain it?

Rupali said: (Jan 5, 2017)  
It's star network. Mesh requires n(n-1) /2.

Shannu said: (Aug 20, 2018)  
Here, it is asked for a number of ports not physical channels. So, n-1 is the correct answer.

Saba said: (Sep 22, 2018)  
If suppose, N number of devices are connected with each other in a mesh topology, the total number of ports that is required by each device is N-1. Assume there are 5 devices connected to each other, hence a total number of ports required is 4.

If suppose, N number of devices are connected with each other in a mesh topology, then a total number of dedicated links required to connect them is NC2 i.e. N (N-1) /2.

In Figure 1, there are 5 devices connected to each other, hence a total number of links required is 5*4/2 = 10.

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