Discussion
The Topology with highest reliability is :
Answer: D
The topology with the highest reliability is Mesh Topology.
In a full mesh every node has a dedicated link to every other node. If one link or node fails, traffic simply takes another path, so there is no single point of failure; the price is a large number of links, \(n(n-1)/2\) for \(n\) nodes.
A bus fails if its single backbone cable is cut, a star fails if its central hub fails, and a simple ring is broken by the failure of any one node or link. Each of these has a single point of failure, which is why mesh is the most reliable.
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