Operating System (OS)
Addressing structure

None of these
All 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
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.

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Operating System (OS)
The FIFO algorithm

None of these
executes first the job that first entered the queue
executes first the job with the least processor needs
executes first the job that last entered the queue
execute first the job that has been in the queue the longest

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