Solved Placement Papers of Wipro
81 / 362
What page replacement algorithm has minimum number of page faults ?
Aframe-allocation algorithm
Boptimal page-replacement algorithm
CLRU page-replacement algorithm
DNone of these
Answer: Option B
Explanation:Here is no explanation for this answer
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82 / 362
What is the use of virtual base class in c++
AMultiple lines between derived classes.
BMultiple lines between base classes.
Cinheritance
DNone of these
Answer: Option A
Explanation:Here is no explanation for this answer
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83 / 362
Assignment operator targets to _____
Ar-value
Bl-value
Cboth
DNone
Answer: Option B
Explanation:Here is no explanation for this answer
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84 / 362
When the function is called where the return address is stored?
AHeap
Bdata
CStack
DNone of these
Answer: Option C
Explanation:Here is no explanation for this answer
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85 / 362
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
A8
B6
C9
D12
E15
Answer: Option B
Explanation:Here is no explanation for this answer
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86 / 362
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
A3m_n^2
B3m
C3m + n
DNone of the these
Answer: Option C
Explanation:Here is no explanation for this answer
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87 / 362
The worst case time complexity of AVL tree is better in comparison to binary search tree for
ASearch and Insert Operations
BSearch and Delete Operations
CInsert and Delete Operations
DSearch, Insert and Delete Operations
Answer: Option D
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 / 362
Which of the following is the most preferred way of throwing and handling exceptions?
AThrow by value and catch by reference.
BThrow by reference and catch by reference.
CThrow by value and catch by value
DThrow the pointer value and provide catch for the pointer type.
Answer: Option B
Explanation:Here is no explanation for this answer
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89 / 362
Which of the following operators can be overloaded?
A.(dot or member access operator)
B& (address-of operator)
Csizeof operator
D?: (conditional operator)
Answer: Option D
Explanation:Here is no explanation for this answer
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90 / 362
Objects created using new operator are stored in __ memory.
ACache
BHeap
CStack
DNone of the above.
Answer: Option B
Explanation:"new" operator allocates memory dynamically in Heap
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