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If a system has 3 frames and following references are given in demand paging. Find the number of page faults using FIFO. Assume initially all three frames are empty.
Reference order:e, d, h, b, d, e, d, a, e, b, e, d, e, b, g.
  • a)
    4
  • b)
    6
  • c)
    8
  • d)
    11
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
If a system has 3 frames and following references are given in demand...
Understanding Page Faults in FIFO
In a system with 3 frames, we will analyze the reference string provided and count the number of page faults using the First-In-First-Out (FIFO) page replacement algorithm.
Reference String
- The reference order is: e, d, h, b, d, e, d, a, e, b, e, d, e, b, g.
Initial Setup
- All 3 frames are initially empty.
Step-by-Step Analysis
1. Reference 'e': Page fault (Frames: e)
2. Reference 'd': Page fault (Frames: e, d)
3. Reference 'h': Page fault (Frames: e, d, h)
4. Reference 'b': Page fault (Replace 'e' with 'b', Frames: d, h, b)
5. Reference 'd': No page fault (Frames: d, h, b)
6. Reference 'e': Page fault (Replace 'h' with 'e', Frames: d, b, e)
7. Reference 'd': No page fault (Frames: d, b, e)
8. Reference 'a': Page fault (Replace 'b' with 'a', Frames: d, e, a)
9. Reference 'e': No page fault (Frames: d, e, a)
10. Reference 'b': Page fault (Replace 'd' with 'b', Frames: b, e, a)
11. Reference 'e': No page fault (Frames: b, e, a)
12. Reference 'd': Page fault (Replace 'a' with 'd', Frames: b, e, d)
13. Reference 'e': No page fault (Frames: b, e, d)
14. Reference 'b': No page fault (Frames: b, e, d)
15. Reference 'g': Page fault (Replace 'b' with 'g', Frames: g, e, d)
Total Page Faults
- The total number of page faults encountered is 11.
Conclusion
Thus, using the FIFO page replacement algorithm with the provided reference string, the number of page faults is confirmed to be 11, which corresponds to option 'D'.
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If a system has 3 frames and following references are given in demand...
11 page faults using FIFO.
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If a system has 3 frames and following references are given in demand paging. Find the number of page faults using FIFO. Assume initially all three frames are empty.Reference order:e, d, h, b, d, e, d, a, e, b, e, d, e, b, g.a)4b)6c)8d)11Correct answer is option 'D'. Can you explain this answer?
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If a system has 3 frames and following references are given in demand paging. Find the number of page faults using FIFO. Assume initially all three frames are empty.Reference order:e, d, h, b, d, e, d, a, e, b, e, d, e, b, g.a)4b)6c)8d)11Correct answer is option 'D'. Can you explain this answer? for GATE 2025 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about If a system has 3 frames and following references are given in demand paging. Find the number of page faults using FIFO. Assume initially all three frames are empty.Reference order:e, d, h, b, d, e, d, a, e, b, e, d, e, b, g.a)4b)6c)8d)11Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for GATE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If a system has 3 frames and following references are given in demand paging. Find the number of page faults using FIFO. Assume initially all three frames are empty.Reference order:e, d, h, b, d, e, d, a, e, b, e, d, e, b, g.a)4b)6c)8d)11Correct answer is option 'D'. Can you explain this answer?.
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