Operating System (OS)
Semaphores

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

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

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

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