3. Consider FIFO, in slide 32 like below: Reference string: 7,0,1,2,0,3,0,4,2,3,0,3,0,3,2,1,2,0,1,7,0,1 ■ 3 frames (3 pages can be in memory at a time per process) reference string 7012 0 3 04 2 3 0 77 2 4 4 4 0 3 2 201 page frames 15 page faults 2 OWN 3 0 3 2 1 201701 0 0 1 1 3 2 712 NOV 2 7 0 1 4. Consider Optimal algorithm. where it shows 9 < 15 faults when there are 3 frames. (a) Repeat with 5 (five) frames. How many page faults are there? (b) How many page faults will be there if we use 9 (nine) frames? For this part (b), you can use mathematical argument without really showing how the frames look for each new number. (c) How many page faults will be there is we use 1 (one) frame? Explain!

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