Operating System (OS)
A translator is best described as

an application software
All of these
a hardware component
None of these
a system software

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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.
All of these
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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