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A task set is analysed and found to have 5 per cent spare capacity. The prudent engineering response is

  • A.to add another task
  • B.to lengthen every deadline by five per cent
  • C.to treat the margin as too small and find some headroom
  • D.to accept it

Answer: C

Execution times grow through a project's life as features are added and error paths appear, and a five per cent margin absorbs almost nothing. Twenty to thirty per cent at first release is a common target for the same reason flash headroom is.

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