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

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

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Operating System (OS)
Thrashing can be avoided if

None of these
the speed of I/O processor is increased
the speed of CPU is increased
the pages, belonging to the working set of the programs, are in main memory
All of these

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