Operating System (OS)
Semaphores

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

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Operating System (OS)
Swapping

allows many programs to use memory simultaneously
allows each program in turn to use the memory
does not work with overlaying
works best with many small partitions
None of these

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Operating System (OS)
Which of the following statements is not true about the FORTRAN language?

All of these
FORTRAN is a high level language
None of these
FORTRAN is extensively used to write programs for performing scientific computations
A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine

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