Operating System (OS)
Addressing modes

All of these
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
None of these
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)
The main function of the dispatcher (the portion of the process scheduler) is

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

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Operating System (OS)
The LRU algorithm

pages out pages that have not been used recently
pages out pages that have been used recently
None of these
pages out the first page in a given area
pages out pages that have been least used recently

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