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2. [13 MARKS] Consider the following page reference string: 7, 2, 3, 1, 2, 5, 3, 4, 6, 7, 1, 3 Assuming demand paging with

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2. [13 MARKS] Consider the following page reference string: 7, 2, 3, 1, 2, 5, 3, 4, 6, 7, 1, 3 Assuming demand paging with four frames, how many page faults would occur for the following replacement algorithms? Please circle which references cause page faults. a) Optimal (OPT) replacement [5] b) LRU replacement [7m]

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