Question: A computer whose processes have 512 pages in their address space keeps its page table in memory. The overhead required for reading a word from

A computer whose processes have 512 pages in their address space

A computer whose processes have 512 pages in their address space keeps its page table in memory. The overhead required for reading a word from page table is 5nsec. To reduce the overhead, the computer has a TLB, which holds 64 entries, and can do a look up in 1nsec. What TLB hit rate is needed to reduce the mean overhead to 3 nsec

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