Practice Instruction Execution Overview (12.4) - Fetch Cycle - Computer Organisation and Architecture

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9 questions

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6 sample questions

Question 1.
What does the Program Counter (PC) do?
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Think of it as a navigation guide for the CPU.
Question 2.
What is the purpose of the Memory Address Register (MAR)?
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Consider how you find a book in a library.
3Question 3.
What is the purpose of the Program Counter (PC)?
- Holds the current instruction
- Tracks the next instruction address
- Stores result data
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Consider what guides the CPU on what to do next.
4Question 4.
True or False: The MBR immediately executes the instruction upon fetching.
- True
- False
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Think about the purpose of buffering in data handling.
Question 5.
Describe a scenario where the CPU tries to simultaneously read and write to the same register during the fetch cycle. What could be the outcome?
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Consider the implications of having conflicting operations in a resource.
Question 6.
Explain how the fetch cycle can be optimized in a modern CPU to minimize instruction retrieval time.
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Think of parallels in optimizing assembly lines for efficiency.

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