Fetch-Decode-Execute Cycle Quiz

What is the correct sequence of the fetch-decode-execute cycle?

• Decode → Fetch → Execute

• Fetch → Decode → Execute

• Execute → Fetch → Decode

• Decode → Execute → Fetch

During the fetch stage, the address of the next instruction is copied from the Program Counter (PC) to which register?

• Instruction Register (IR)

• Memory Address Register (MAR)

• Memory Data Register (MDR)

• Accumulator

In which stage is the opcode and operand extracted from the fetched instruction?

• Fetch

• Decode

• Execute

• Store

What happens immediately after the instruction is fetched from RAM?

• It is stored in the Accumulator.

• The program counter is incremented.

• The instruction is executed.

• The memory address register is cleared.

In the decode stage, the control unit splits the instruction into which two parts?

• Program Counter and Operand

• Opcode and Accumulator

• Opcode and Operand

• Operand and ALU

What is the purpose of the operand in an instruction?

• It tells the CPU which operation to perform.

• It holds the memory address of the data.

• It stores the final result of a calculation.

• It increments the program counter.

What role does the Control Unit (CU) play in the decode stage?

• It performs arithmetic calculations.

• It increments the program counter.

• It interprets the opcode and determines the next action.

• It stores data temporarily.

In which stage is data moved from RAM to the Accumulator?

• Fetch

• Decode

• Execute

• Store

During execution, where is data processed?

• Control Unit (CU)

• Memory Address Register (MAR)

• Arithmetic Logic Unit (ALU)

• Program Counter (PC)

At the end of the fetch stage, which register holds the fetched instruction?

• Memory Data Register (MDR)

• Accumulator

• Instruction Register (IR)

• Program Counter (PC)