You need an inexpensive, reliable network for about twenty-five computers, all of which will be in two rooms. It is important that the network not entirely depend on one hub or one node. However, nodes will regularly be added and removed from the network, so flexibility is essential. Which topology should you use?

A bus topology is inexpensive and makes it relatively easy to add or remove computers, which suits a network that changes often. It also has no central hub or single computer that all the others depend on. A mesh is more fault-tolerant, but the many connections make it costly and less practical to change; a bus does still depend on its main cable.

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