Practice Priority Based Allocation (20.4.4) - Belady's Anomaly - Computer Organisation and Architecture

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6 sample questions

Question 1.
What does Belady's anomaly demonstrate?
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Think about frame counts.
Question 2.
Define a page fault.
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Consider missed pages.
3Question 3.
What is Belady's Anomaly?
- A decrease in page faults with more frames
- An increase in page faults with more frames
- An irrelevant phenomenon
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Focus on the relationship between frames and faults.
4Question 4.
LRU stands for?
- Least Recently Used
- Last Remaining Utility
- Latest Random Update
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Think about replacing what hasn't been used lately.
Question 5.
You have a reference string of pages: 7, 0, 1, 2, 0, 3, 0, 4, and a system with 3-page frames. Calculate the number of page faults using FIFO.
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Remember how FIFO moves the oldest frame out.
Question 6.
Analyze the efficiency of using Priority-based Allocation versus Fixed Allocation in a multi-process scenario with given process sizes.
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Think about the impact of priority on resource access.

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