Operating System (OS)
Swapping

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

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Operating System (OS)
Semaphores

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

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Operating System (OS)
Which, of the following, is true for testing and debugging?

Testing checks for logical errors in the programs, while debugging is a process of correcting those errors in the program
None of these
Testing and debugging indicate the same thing
All of these
Testing detects the syntax errors in the program while debugging corrects those errors in the program

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