A star topology is dependent upon the capacity of the central computer for its performance. So the right answer to this question is B.
The star topology can be defined as a network topology in which each network component is physically connected to a central node such as a router, hub, or switch. In a star topology, the central hub acts like a server and the connecting nodes act like clients. The star topology has a function to reduce the impact of a transmission line failure by independently connecting each host to the hub.
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