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A super-loop system is found to miss a 5 ms deadline because one activity occasionally takes 8 ms. The least disruptive remedy is

  • A.to move the whole application onto a kernel
  • B.to lengthen the deadline to 10 ms
  • C.to break the long activity into shorter steps
  • D.to raise the clock frequency of the processor

Answer: C

Splitting the offender so the loop comes round often enough restores the timing without restructuring anything else. Introducing a kernel would work but is a far larger change, and moving the deadline is a change to the requirement rather than to the design.

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