Practice Understanding Belady's Anomaly (20.1.1) - Belady's Anomaly - Computer Organisation and Architecture

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6 sample questions

Question 1.
What is Belady's Anomaly?
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Think about what happens during page replacement.
Question 2.
Define FIFO.
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Consider how items are managed in a queue.
3Question 3.
What is Belady's Anomaly?
- A type of page fault
- An increase in page faults despite more frames
- An algorithm type
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Think about scenarios with page management.
4Question 4.
True or False: FIFO always minimizes page faults.
- True
- False
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Recall the conditions under which FIFO performs poorly.
Question 5.
Given a reference string of 1, 2, 3, 4, 1, 2, 5, simulate the page faults with both 3 and 4 frames using FIFO. Analyze the results.
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Count hits and misses carefully for both. How does the outcome reveal Belady's Anomaly?
Question 6.
Discuss how LRU can avoid the pitfalls of FIFO in terms of page replacement choices. Provide an example scenario.
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Think about which page ended up being evicted under FIFO versus LRU.

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