Operating System (OS)
Semaphores

are used for memory management
synchronize critical resources to prevent deadlock
are used to do I/O
None of these
synchronize critical resources to prevent contention

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Operating System (OS)
The advantage(s) of incorporating the macro processor into pass 1 is(are):

more flexibility is available to the programmer in that he may use all the features of the assembler in conjunction with macros.
Functions are combined and it is not necessary to create intermediate files as output from the macros processor and input to the assembler.
None of these
All of these
many functions do not have to be implemented twice.

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