The sequence Fetch-Decode-Execute-Store describes which CPU cycle?

The sequence Fetch-Decode-Execute-Store describes which CPU cycle?

• A. I/O cycle
• B. Fetch-Decode-Execute-Store
• C. Pipeline Cycle
• D. Execution Fetch Cycle

Answer: (B)

This question tests the sequence an instruction goes through in a CPU’s instruction cycle: Fetch, Decode, Execute, and Store. The processor first Fetches the next instruction from memory into the instruction path, then Decode determines what operation is needed and which operands are involved. Next, Execute carries out the operation (such as performing arithmetic or logic), and finally Store writes the results back to the destination register or memory. This order is fundamental to how a CPU processes each instruction from start to finish. The I/O cycle describes input/output operations rather than the internal steps of executing an instruction. The Pipeline Cycle refers to overlapping stages of multiple instructions in a processor’s pipeline, not the complete single-instruction sequence. Execution Fetch Cycle isn’t a standard term for the instruction processing flow.

This question tests the sequence an instruction goes through in a CPU’s instruction cycle: Fetch, Decode, Execute, and Store. The processor first Fetches the next instruction from memory into the instruction path, then Decode determines what operation is needed and which operands are involved. Next, Execute carries out the operation (such as performing arithmetic or logic), and finally Store writes the results back to the destination register or memory. This order is fundamental to how a CPU processes each instruction from start to finish.

The I/O cycle describes input/output operations rather than the internal steps of executing an instruction. The Pipeline Cycle refers to overlapping stages of multiple instructions in a processor’s pipeline, not the complete single-instruction sequence. Execution Fetch Cycle isn’t a standard term for the instruction processing flow.