Operating System (OS)
Addressing structure

are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
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

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Operating System (OS)
Multiprogramming systems:

are used only on large mainframe computers
execute more jobs in the same time period
are easier to develop than single programming system
execute each job faster
None of these

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