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Placement Questions & Answers :: Wipro

81. What page replacement algorithm has minimum number of page faults ?

Answer: optimal page-replacement algorithm

Explanation:

Here is no explanation for this answer

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82. What is the use of virtual base class in c++

Answer: Multiple lines between derived classes.

Explanation:

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83. Assignment operator targets to _____

Answer: l-value

Explanation:

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84. When the function is called where the return address is stored?

Answer: Stack

Explanation:

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85. int zap (int n)
{
if (n<=1)then zap=1;
else zap=zap(n-3)+zap(n-1);
}
then the call zap(6) gives the values of zap

Answer: 6

Explanation:

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86. A byte addressable computer has memory capacity of 2 power m Kbytes and can perform 2 power n operations an instruction involving three operands and one operator needs maximum of___________ bits

Answer: 3m + n

Explanation:

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87. The worst case time complexity of AVL tree is better in comparison to binary search tree for

Answer: Search, Insert and Delete Operations

Explanation:

Search is O(log N) since AVL trees are always balanced. Insertion and deletions are also O(logn) where as in case of BST it is O(n).

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88. Which of the following is the most preferred way of throwing and handling exceptions?

Answer: Throw by reference and catch by reference.

Explanation:

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89. Which of the following operators can be overloaded?

Answer: ?: (conditional operator)

Explanation:

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90. Objects created using new operator are stored in __ memory.

Answer: Heap

Explanation:

"new" operator allocates memory dynamically in Heap

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