Practice Memory Hierarchy (14.3) - Page Faults - Computer Organisation and Architecture

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9 questions

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6 sample questions

Question 1.
What is a page fault?
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Think about what happens when you try to access a program that is not loaded.
Question 2.
What does a valid bit signify?
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Consider what it means when we check the status of a page in the memory.
3Question 3.
What does a page fault indicate?
- All data is in memory
- Data is not in memory
- Program has finished execution
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Consider what happens when you try to access unloaded data.
4Question 4.
True or False: The TLB only caches virtual addresses.
- True
- False
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Remember the purpose of TLB in address translation.
Question 5.
How does adding more cache affect system performance, considering page faults and TLB hits?
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Think about how often data is accessed and how caching helps memory retrieval.
Question 6.
If a program runs with a page fault rate of 5% and each fault costs 200ms, calculate the average time taken for 1000 instructions assuming each instruction takes 10ms.
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Break down the problem into instruction time and fault handling time.

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