COMPUTER NETWORKS AND COMMUNICATIONS
NETWORK TOPOLOGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Requires additional hardware such as the central hub or switch
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if the main cable is damaged or fails the whole network fails
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More collisions with lots of machines on the network
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If the central device fails the whole network goes down.
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Detailed explanation-1: -Requires more cable length than a linear topology. If the hub, switch, or concentrator fails, nodes attached are disabled. More expensive than linear bus topologies because of the cost of the hubs, etc.
Detailed explanation-2: -3 The primary disadvantage of the star topology is the hub is a single point of failure: If the hub were to fall short the whole network would fail as a result of the hub being connected to every computer on the network. There will be communication break down between the computers when the hub fails.
Detailed explanation-3: -In star topology, the central site plays an important role; if it fails, all the connections will go down. Performance of the central hub dictates the performance of the connection. For a star topology, it may happen that two nodes might be closed to each other; however, they will have to communicate via central node.
Detailed explanation-4: -Disadvantages of Bus Topology Cables fails then whole network fails. If network traffic is heavy or nodes are more the performance of the network decreases. Cable has a limited length. It is slower than the ring topology.