Operating System (OS)
In which addressing mode, the address of the location of the operand is given explicitly as a part of the instruction.

modulus mode
None of these
index mode
absolute mode
immediate mode

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Operating System (OS)
Semaphores

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

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Operating System (OS)
Swapping

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

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