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.

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

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Microprocessor
The correct sequence of steps in the instruction cycle of a basic computer is

 Fetch, Read effective address, Decode and Execute.
 Read effective address, Decode, Fetch and Execute.
 Fetch, Decode, Read effective address and, Execute.
 Fetch, Execute, Decode and Read effective address.

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