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Determine the page faults when FIFO is applied to the following string with 3 frames 2, 4, 3, 1, 5, 3, 2, 5, 3, 1, 4, 2
- a)7
- b)12
- c)9
- d)10
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Determine the page faults when FIFO is applied to the following string...
So, 10 page faults.
Most Upvoted Answer
Determine the page faults when FIFO is applied to the following string...
Solution:
FIFO (First In First Out) is a page replacement algorithm where the oldest page is replaced first.
Given string: 2, 4, 3, 1, 5, 3, 2, 5, 3, 1, 4, 2
Number of frames = 3
We can use a table to keep track of the frames and the page faults.
| Page | Frame 1 | Frame 2 | Frame 3 | Page Fault |
|--------|---------|---------|---------|------------|
| 2 | 2 | | | Yes |
| 4 | 2 | 4 | | Yes |
| 3 | 2 | 4 | 3 | Yes |
| 1 | 1 | 4 | 3 | Yes |
| 5 | 1 | 5 | 3 | Yes |
| 3 | 1 | 5 | 3 | No |
| 2 | 1 | 5 | 2 | Yes |
| 5 | 1 | 5 | 2 | No |
| 3 | 1 | 5 | 3 | Yes |
| 1 | 1 | 5 | 3 | Yes |
| 4 | 4 | 5 | 3 | Yes |
| 2 | 4 | 2 | 3 | Yes |
Total page faults = 10
Therefore, option D is the correct answer.
FIFO (First In First Out) is a page replacement algorithm where the oldest page is replaced first.
Given string: 2, 4, 3, 1, 5, 3, 2, 5, 3, 1, 4, 2
Number of frames = 3
We can use a table to keep track of the frames and the page faults.
| Page | Frame 1 | Frame 2 | Frame 3 | Page Fault |
|--------|---------|---------|---------|------------|
| 2 | 2 | | | Yes |
| 4 | 2 | 4 | | Yes |
| 3 | 2 | 4 | 3 | Yes |
| 1 | 1 | 4 | 3 | Yes |
| 5 | 1 | 5 | 3 | Yes |
| 3 | 1 | 5 | 3 | No |
| 2 | 1 | 5 | 2 | Yes |
| 5 | 1 | 5 | 2 | No |
| 3 | 1 | 5 | 3 | Yes |
| 1 | 1 | 5 | 3 | Yes |
| 4 | 4 | 5 | 3 | Yes |
| 2 | 4 | 2 | 3 | Yes |
Total page faults = 10
Therefore, option D is the correct answer.
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Determine the page faults when FIFO is applied to the following string with 3 frames 2, 4, 3, 1, 5, 3, 2, 5, 3, 1, 4, 2a)7b)12c)9d)10Correct answer is option 'D'. Can you explain this answer?
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