Operating System (OS)
The memory allocation scheme subject to "external" fragmentation is

segmentation
multiple contiguous fixed partitions
swapping
pure demand paging
None of these

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Operating System (OS)
The disadvantages of "Compile and Go" loading scheme is (are):

None of these
a portion of memory is wasted because the core occupied by the assembler is unavailable to the object program.
it is very difficult to handle multiple segments, especially if the source programs are in different languages, and to produce orderly modular programs.
it is necessary to retranslate the user's program deck every time it is run.
All of these

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