71. A
tree in which, for every node, the difference between the height of its left
subtree and right subtree is not more than one is

(A) AVL Tree

(B) Complete Binary Tree

(C) B – Tree

(D) B+ Tree

Answer: A

72. The
data structure needed to convert a recursion to an iterative procedure is
............

(A) Queue

(B) Graph

(C) Stack

(D) Tree

Answer: C

73. Which
of the following uses FIFO method?

(A) Queue

(B) Stack

(C) Hash Table

(D) Binary Search Tree

Answer: A

74. A
binary tree stored using linked representation can be converted to its mirror
image by traversing it in ...............

(A) In-order

(B) Pre-order

(C) Post-order

(D) Any order

Answer: B

75. Minimum
number of spanning tree in a connected graph is .............

(A) n

(B) n

^{n - 1}
(C) 1

(D) 0

Answer: C

76. Which
of the following algorithm cannot be designed without recursion?

(A) Tower of Hanoi

(B) Fibonacci Series

(C) Tree Traversal

(D) None of the above

Answer: D

77. The
prefix form of an infix expression A+B-C*D is

(A) +AB-*CD

(B) -+A B C * D

(C) -+A B * C D

(D) - + *ABCD

Answer: C

78. Binary
search tree is an example of complete binary tree with special attributes:

(A) BST does not care about complete binary
tree properties.

(B) BST takes care of complete binary tree
properties.

(C) It depends upon the input.

(D) None of the above.

Answer: A

79. For
a binary search algorithm to work, it is necessary that the array must be
............

(A) sorted

(B) unsorted

(C) in a heap

(D) popped out of stack

Answer: A

80. A
random access file is organized most like a(n):

(A) Array

(B) Object

(C) Class

(D) Pointer

Answer: A

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