Consider a demand-paging system with a paging disk that has an average access time of 20 milliseconds (ms). Addresses are translated through a page table in main memory, with an access time of 2 millisecond (ms) per main memory access. Assume page fault ratio is 10 percent. (a) [5 pt] Assume the paper table has two levels. What’s the effective memory access time? (b) [5 pt] To improve this time, we can add a TLB that reduces access time if the page-table entry is in the TLB. Assume access time

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