As an operating system repeatedly allocates and frees storage space, many physically separ
As an operating system repeatedly allocates and frees storage space, many physically separated unused areas appear. This phenomenon is called (71).
A．fragmentation
B．compaction
C．swapping
D．paging
解析：随着操作系统反复分配与释放存储空间，就会出现许多不连续的未用物理区域，这种现象称为碎片。
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