Practice Description Of Fixed Allocation (20.4.2.1)

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6 sample questions

Question 1.
What is Belady's anomaly?
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Think about how adding more frames might not always help performance.
Question 2.
Describe fixed allocation in your own words.
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Consider how memory is divided among processes.
3Question 3.
What does Belady's anomaly demonstrate?
- Increasing frames always decrease page faults
- Increasing frames can increase page faults
- No relation between frames and faults
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Think about specific algorithms like FIFO.
4Question 4.
Fixed allocation means?
- True
- False
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Consider the definitions discussed in class.
Question 5.
Construct a scenario with a reference string demonstrating at least 9 page faults using fixed allocation with 3 frames, and show the replacement process.
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Track pages and their replacements through FIFO replacement strategy.
Question 6.
Analyze a case where proportional allocation could lead to thrashing if processes require more memory than available.
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Identify maximum allocations possible versus process needs.

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