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Using the information given in the table below, calculate the I/O access speed using CPU 3 and each of the hour disk drives as they evaluate the...

Using the information given in the table below, calculate the I/O access speed using CPU 3 and each of the hour disk drives as they evaluate the following track requests: 0, 31, 20, 15, 20, 31, 15. In each case, determine whether reordering the requests would be advantageous.

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