What are the advantages of star topology?

Question

(a) Less number of cables are required

(b) More number of cables are required

(c) It is a distributed topology

(d) Security is high

Comments

A Star topology connecting $n$ nodes uses the minimum number of cables$ \left ( n - 1 \right ) $, that can be used to connect $n$ nodes.

It is a central topology & not a distributed topology as it contains a central node.

Meaning of "Security" is not clear to me, but if it means "Robustness" here, then Star topology is not very robust since failure of $1$ cable/link will disconnect $1$ node from the network.

a) might be the correct answer.

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@Anurag no of cables is n .

see here http://enggedu.com/tamilnadu/university_questions/question_answer/be_nd_2006/5th_sem/cse/cs1302/part_b/11_b_3.html

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Neither the link is authentic nor the information given seems correct to me.

I feel that they have exchanged counting for ring & star topologies.

Also when you can have maximum $\frac{n\left ( n - 1 \right )}{2}$ links between $n$ nodes, both having $n$ links & having $\left ( n - 1 \right )$ links can be considered to as having less cables.

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A should be correct..

Answer 1

I think (D) could be the answer

Because star topology if one cable is down , other cable could connect the whole device. So, better secure than bus topology.

But problem here is it depends on centralized system,  so, ambiguity in question

http://computernetworkingnotes.com/network-technologies/network-topologies.html

Answer 2

Ans : $D$) Security is high
a. In Star topology, more number of cables are required compared to Ring topology. For ‘$n$’ devices, Star topology requires ‘$n$’ cables, which connect to a central hub. Ring topology, where there is no central hub, requires ‘$n-1$’ cables for connecting $n$ devices. Mesh topology requires $\frac{n(n-1)}{2}$ cables.

b)The statement is true but it is not an advantage.

c) Distributed topology is different from Star topology. Star topology is a centralized topology.
d) Star topology is designed against point failures affecting the whole network. So its security is high.