Year 9 HT3 CPU II

What is the main function of the CPU?

• To process instructions and execute instructions
• To store all computer files
• To display images on the screen
• To connect to the internet

What are the three stages of the Fetch-Decode-Execute cycle?

• Fetch, Decode, Execute
• Read, Process, Save
• Load, Run, Stop
• Input, Output, Process

What happens during the Fetch stage?

• The CPU retrieves an instruction from memory
• The CPU executes the instruction
• The CPU translates the instruction
• The CPU checks for errors

What happens during the Decode stage?

• The CPU translates the instruction so it knows what to do
• The CPU retrieves the instruction
• The CPU executes the instruction
• The CPU increases its speed

How does a higher clock speed affect CPU performance?

• The CPU processes more instructions per second
• The CPU becomes more power-efficient
• The CPU generates less heat
• The CPU stores more data

If a CPU has a clock speed of 3 GHz, how many cycles does it perform per second?

• 3 million
• 3 billion
• 300 thousand
• 3 trillion

What is the role of multiple cores in a CPU?

• They allow the CPU to process multiple tasks at once
• They store extra memory
• They increase the screen resolution
• They slow down the processor

If a CPU has 2 cores and a 3 GHz clock speed, how many cycles can it complete per second?

• 6 million
• 6 billion
• 3 billion
• 9 billion

A CPU has 4 cores and a clock speed of 2.5 GHz. How many cycles can it perform per second?

• 10 million
• 10 billion
• 5 billion
• 8 billion

What does GHz stand for in CPU performance?

• Gigahertz – billions of cycles per second
• General Hardware Zone
• Graphics High-Speed Zone
• Gigabytes per second