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A hard real time deadline is one whose breach

  • A.affects only the average throughput of the system
  • B.constitutes a system failure
  • C.degrades the quality of the result but is tolerable
  • D.is acceptable provided it happens rarely

Answer: B

Correct answer: constitutes a system failure

A hard deadline is one whose breach means the system has failed, whatever else it is doing correctly - an airbag firing late, a motor commutation missed. A soft deadline degrades the result instead, and the distinction determines how the system must be analysed and how much margin it needs.

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