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Which conclusion follows from communication returning when one module is unplugged?

  • A.The fault lies in that module, its connector or the section of wiring leading to it, and must be narrowed further
  • B.That module or its branch is disturbing the bus
  • C.That module has failed and must be replaced, which will restore the network to its normal operating condition
  • D.Nothing

Answer: B

Unplugging a module removes the module, its connector and its branch together. The last option states that ambiguity explicitly, which makes it a correct and more careful version of the same conclusion. The shared behaviour explains why these belong together and the differences explain why both exist. Checking which component actually carries the load settles most questions of this kind at once. Reading the definition literally, rather than recalling a summary, avoids the usual confusion.

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