Microprocessor
The stack is nothing but a set of

 reserved RAM address space
 reserved ROM address space
None of these
 reserved I/O address space

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Microprocessor
When RET instruction is executed by any subroutine then

 the PC will be incremented after the execution of the instruction.
 without any operation, the calling program would resume from instruction immediately following the call instruction and also the PC will be incremented after the execution of the instruction.
 without any operation, the calling program would resume from instruction immediately following the call instruction.
 the top of the stack will be popped out and assigned to the PC.

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Microprocessor
Assertion(A): Segment override prefix (SOP) is used when a default offset register is not used with its default base segment register but with a different base register. Reason(R): The offset registers IP and SP can never be associated with any other segment registers apart from their respective default segments.

 A is true but R is false.
 Both A & R are true but R is not the correct explanation of A.
 A is false but R is true.
 Both A & R are true and R is the correct explanation of A.

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