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The chief practical benefit of a kernel over a super-loop in a large application is that it

  • A.lets each activity be written as though it owned the processor
  • B.reduces the total amount of processor time the application needs
  • C.removes the need to protect data shared between activities
  • D.guarantees that no deadline will ever be missed

Answer: A

Writing a task that simply waits for what it needs is enormously easier than breaking the same logic into a state machine that must never block. The kernel costs processor time rather than saving it, and shared data needs more protection rather than less.

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