Practice Optimal Algorithm And Lru (20.2) - Belady's Anomaly - Computer Organisation and Architecture

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6 sample questions

Question 1.
What is a page fault?
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Think about accessing files not loaded in the system.
Question 2.
Define Belady’s anomaly.
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Consider the efficiency of memory management.
3Question 3.
What does Belady’s anomaly refer to?
- More frames can lead to fewer faults
- More frames can lead to more faults
- It has no impact on page faults
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It's a unique situation in memory management.
4Question 4.
True or False: The Optimal algorithm can predict future page accesses.
- True
- False
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Consider the advantages it claims.
Question 5.
Using the reference string 7, 3, 0, 1, 2, 0, 3, 0, 4, 2, with 4 frames, calculate the number of page faults using both Optimal and LRU algorithms.
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Track which pages are in memory after each access.
Question 6.
Create a scenario where an increase in frame number would lead to Belady's Anomaly. Describe it using a reference string.
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Think of common access patterns and how they interact with frame limits.

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