Year 9 Computer Science Quiz - CPU

What does CPU stand for?

• Central Processing Unit

• Computer Power Unit

• Core Processing Unit

• Control Processing Unit

Which part of the CPU performs arithmetic and logic operations?

• Memory Unit

• Control Unit

• Arithmetic Logic Unit (ALU)

• Cache

Which of the following best describes the Control Unit (CU) in the CPU?

• It performs mathematical calculations.

• It stores program instructions.

• It manages and controls the activities of the CPU.

• It saves files permanently.

What is the purpose of the cache in a CPU?

• To store large files like videos.

• To temporarily store frequently accessed data.

• To control the speed of the CPU.

• To connect the CPU to the internet.

Which of these registers holds the address of the next instruction to be executed?

• Memory Data Register (MDR)

• Current Instruction Register (CIR)

• Program Counter (PC)

• Memory Address Register (MAR)

Which component of the CPU is responsible for performing calculations?

• Control Unit (CU)

• Arithmetic Logic Unit (ALU)

• Cache

• Memory

What does the Memory Address Register (MAR) do?

• Stores the result of calculations

• Holds the address of the current instruction or data

• Manages the CPU speed

• Holds the current instruction being executed

What is the correct order of the stages in the Fetch-Decode-Execute cycle?

• Decode, Execute, Fetch

• Fetch, Execute, Decode

• Fetch, Decode, Execute

• Execute, Decode, Fetch

During the Fetch stage, what does the CPU do?

• It performs the instruction.

• It reads the instruction from memory.

• It decodes the instruction.

• It stores the result.

What happens during the Decode stage?

• The CPU executes the instruction.

• The CPU reads the next instruction from memory.

• The CPU interprets the instruction.

• The CPU saves the data.