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

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

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Operating System (OS)
Thrashing can be avoided if

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

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Operating System (OS)
The Storage-to-Storage instructions

which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also
have both their operands in the main store.
which perform indicated operations on two fast registers of the machine and have the result in one of the registers
None of these
All of these

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