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

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

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Operating System (OS)
File record length

None of these
should be chosen to match the data characteristics
depends upon the size of the file
Should always be variable
should always be fixed

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