What is the main purpose of the Second Chance page replacement algorithm?

Options

  • A. To always replace the newest page
  • B. To give recently referenced pages another chance before replacement
  • C. To replace the page with the largest size
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. To give recently referenced pages another chance before replacement

Detailed Explanation

Explanation: The Second Chance algorithm is an improvement over FIFO. It uses a reference bit. If the reference bit of the oldest page is 0, the page can be replaced. If it is 1, the algorithm clears the bit and gives that page a second chance instead of immediately replacing it.

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