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The system uses 5 page frames with the page reference string as follows:0,1,2,3,0,1,4,0,1,2,3,7Find the number of page hits in FIFO Replacement Policy.

Question

The system uses 5 page frames with the page reference string as follows:0,1,2,3,0,1,4,0,1,2,3,7Find the number of page hits in FIFO Replacement Policy.

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Solution

To find the number of page hits in the FIFO Replacement Policy, we need to simulate the page replacement process using the given page reference string and the number of page frames.

Step 1: Initialize the page frames and the page reference string.

  • Number of page frames: 5
  • Page reference string: 0, 1, 2, 3, 0, 1, 4, 0, 1, 2, 3, 7

Step 2: Initialize the variables.

  • Page hits: 0
  • Page faults: 0
  • Page frame queue: []

Step 3: Start iterating through the page reference string.

  • For each page in the page reference string:
    • Check if the page is already present in the page frame queue.
      • If yes, increment the page hits count.
      • If no, check if the page frame queue is full.
        • If yes, remove the oldest page from the page frame queue (FIFO).
        • If no, continue.

Step 4: Update the page frame queue.

  • Add the current page to the page frame queue.

Step 5: Repeat steps 3 and 4 until all pages in the reference string are processed.

Step 6: Print the number of page hits.

In this case, the number of page hits in the FIFO Replacement Policy is ____.

This problem has been solved

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