Beginner
Operating Systems
Q25 / 100
What is the Least Recently Used (LRU) page replacement policy?
Correct! Well done.
Incorrect.
The correct answer is B) Replace the page that has not been used for the longest time
B
Correct Answer
Replace the page that has not been used for the longest time
Explanation
LRU approximates OPT (optimal) by replacing the least recently used page. It is theoretically good but expensive to implement exactly; approximations (clock algorithm) are used in practice.
Progress
25/100