Difference between external and internal fragmentation

Reference no: EM131071947

operating system hw

What is the difference between external and internal fragmentation?
Given five memory partitions of 100 KB, 400 KB, 200 KB, 300 KB, and 700 KB (in order), how would each of the first-fit, best-fit, and worst-fit algorithms place processes of 312 KB, 217 KB, 112 KB, and 426 KB
Consider a computer system with a 32-bit logical address and 2-KB page size. The system supports up to 256 MB of physical memory. How many entries are there in a conventional page table? Explain your answer.
Consider a paging system with the page table stored in memory.
If a memory reference takes 120 nanoseconds, how long does a paged memory reference take? Explain your answer.
If we add TLBs, and 70% 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.)

Reference no: EM131071947

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