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NPTEL-Design and Analysis of Algorithms-Week1-Quiz-2-Q12

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State true or false. When a user encounters a page fault, 1) The user application informs the OS, 2) User uses API calls to the hardware Memory Management unit, 3) Memory Management unit brings the page from hard disk to main memory.

 

Is Statement 2 correct ?
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Option 3 is correct. There are no API calls for accessing memory. Memory access is a previledged operation and can be done only in kernel. User applications and Runtime enviroments make use of System Calls internally to do the same. When a page fault occurs MMU fetches the page from disk automatically.
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Dulqar asked Jan 24, 2017
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NPTEL-Design and Analysis of Algorithms-Week1-Quiz-1-Q6
if T(n) = n2 √ n then T(n) = O(n2) T(n) = O(n2 log n) T(n) = O(n3) None of the above Im getting option 2 is it correct ?
if T(n) = n2 √ n thenT(n) = O(n2)T(n) = O(n2 log n)T(n) = O(n3)None of the aboveIm getting option 2 is it correct ?
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