Operating System (OS)
Swapping

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

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Operating System (OS)
All of the following are task performed by the operating system except

Controlling the access that application program has to the CPU
Performing housekeeping task like file compression and disk defragmentation
Provides an interface for user to interact with computer
Managing hardware on the computer

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Operating System (OS)
The main function of the dispatcher (the portion of the process scheduler) is

assigning ready process to the CPU
None of these
swapping a process to the disk
suspending some of the processes when the CPU load is high
bring processes from the disk to the main memory

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