Question

Consider the following page reference string: 1, 2, 3, 4, 2, 1,2, 6, 2, 4, 2, 3, 7, 6, 3, 7, 1, 2, 3, 7. Identify how many page faults would occur for the following replacement algorithm. Assume frame size = 4. (Remember all frames are initially empty, so your first unique pages will all cost one fault each.)
• LRU replacement
• FIFO replacement
• Optimal replacement
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Answer 1

Explanation:

In weightlessness, you are effortlessly floating, because all of the acceleration forces on you add to zero. The most comparable feeling is floating in water without the sensation of water on your skin. Because you feel so light, you can move about with the slightest amount of effort.