3. Perform an analysis for disk ranges from 0 to 199 for the following sequence of disk tracks requests: 127, 12, 110, 92, 147, 141, 10, 14, 83, 188, 25 and 120. Assume disk head initially at track 100 and is moving in the direction of decreasing track number. Perform the analysis on FIFO, SSTF, SCAN, and CSCAN algorithms. Calculate the total head movement for each algorithm and represent with graph.
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