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

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

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Operating System (OS)
The FIFO algorithm

executes first the job with the least processor needs
executes first the job that first entered the queue
executes first the job that last entered the queue
None of these
execute first the job that has been in the queue the longest

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