Answer: a technique for overcoming external
fragmentation
Compaction,
is a process where the memory
manager rearranges the free memory space to create larger blocks of free contiguous memory.
Compaction
is a technique to collect all the
free memory present in the form of fragments into one large block
of free memory.
Compaction is
used to overcome external fragmentation.
Compaction
helps to solve the problem of fragmentation, but The efficiency of the system
is decrease as it requires to move all the occupied areas of store are moved to
one end and leaves one large free space for incoming jobs.
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