Operating System (OS)
In which addressing mode the operand is given explicitly in the instruction?

absolute mode
indirect mode
immediate mode
None of these
index mode

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Operating System (OS)
Addressing structure

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

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