Q：the risk to a bus network is that _____ a.devices attached or detached at any point on the bus disrupt the rest of the network b.the failure of one device usually affect the rest of the network c. the bus itself might become inoperable d. all of the above 小弟不才，不知道答案为何？希望有人可以为小弟解答并说明原因 感谢你！ --

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