Question: Explain the difference between internal and external fragmentation in the context of Memory Management. Consider a paging system with the page table stored in memory.

Explain the difference between internal and external fragmentation in the context of Memory Management. Consider a paging system with the page table stored in memory. If a memory reference takes 150 nanoseconds, how long does a page memory reference take? If we add TLBS, and 80 % of all page-table references are found in the TLBs, what is the effective memory reference time? (Assume that finding a page-table entry in the TLBs takes zero time, if the entry is there.)

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