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Chapter 3 · SoftwarePractice
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CONCEPT PRACTICE

FIFO and LRU page replacement

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2025 Autumn · Subject A · Q15

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Q15. The page capacity of main memory is three pages, and the pages are referenced in the order {1, 2, 3, 2, 1, 4, 5}. Which of the following is the page that will be replaced from main memory for the last page reference if LRU is used as the page replacement technique?

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Source: 2025A_FE-A_Questions.pdf, PDF page 10. ID: 2025A-A-Q015. Explanation written for this textbook.

Original question · Q15
Q15. The page capacity of main memory is three pages, and the pages are referenced in the order {1, 2, 3, 2, 1, 4, 5}. Which of the following is the page that will be replaced from main memory for the last page reference if LRU is used as the page replacement technique?

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