Practice Optimal Replacement Policy (18.2.8.2) - Page Replacement Algorithms

Practice: Optimal Replacement Policy

Lesson 18.2.8.2Page Replacement Algorithms

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8 questions

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6 sample questions

Question 1.
Define the Optimal Replacement Policy.
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Think about how you would decide which page not to use again for a while.
Question 2.
What does a page fault signify?
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Consider how the system reacts when data is missing.
3Question 3.
What does the Optimal Replacement Policy aim to achieve?
- Reduce processing time
- Reduce page fault rate
- Increase memory size
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Think about what happens when pages are not found.
4Question 4.
True or False: The Optimal Replacement Policy can be easily implemented in real-world systems.
- True
- False
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Is predicting future memory requests possible?
Question 5.
You have pages X, Y, Z in memory. Implement an Optimal Replacement Strategy for requests in the order: X, Y, W, Z, V, Y and specify which page gets replaced each time.
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Look ahead at the request sequence.
Question 6.
Reflect on a scenario where the Optimal Replacement might result in worse performance compared to a simpler algorithm. What could cause this?
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Think about patterns in data requests.

4 more questions in this section. Enroll free to practise them all.