问题

● As an operating system repeatedly allocates and frees storage space, many physically sep

● As an operating system repeatedly allocates and frees storage space, many physically separated unused areas appear．This phenomenon is called （71） .

（71）

A． fragmentation

B． compaction

C． swapping

D． paging

请帮忙给出正确答案和分析，谢谢！

参考答案

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