Operating System (OS)
Addressing structure

All of these
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
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 necessary conditions needed before deadlock can occur?

Mutual Exclusion, Hold and wait, Preemption, No Circular Wait
Mutual Exclusion, Hold and wait, No Preemption, Circular Wait
No Mutual Exclusion, Hold and wait, Preemption, Circular Wait
Mutual Exclusion, No Hold and wait, Preemption, Circular Wait

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