Operating System (OS)
Addressing modes

All of these
None of these
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
defines the fundamental method of determining effective operand addresses

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Operating System (OS)
Thrashing can be avoided if

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

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