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Sometimes the overhead of keeping track of a hole might be :

  • A.larger than the memory
  • B.larger than the hole itself
  • C.very small
  • D.All of these

Answer: B

Correct answer: larger than the hole itself

A hole must be recorded in the free list, and if the hole is very small the record costs more memory than the hole would ever supply. Such holes are therefore left attached to the allocated block, which converts external fragmentation into internal.

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