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Welcome to the Data Structures and Algorithms MCQs Page

Dive deep into the fascinating world of Data Structures and Algorithms with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Structures and Algorithms, a crucial aspect of UGC CBSE NET Exam. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Structures and Algorithms, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within UGC CBSE NET Exam.

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Check out the MCQs below to embark on an enriching journey through Data Structures and Algorithms. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of UGC CBSE NET Exam.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Data Structures and Algorithms. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Structures and Algorithms MCQs | Page 14 of 27

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Q131.
The value of postfix expression:

8 3 4 + - 3 8 2 / + * 2 $ 3+ is

a.

17

b.

131

c.

64

d.

52

Discuss
Answer: (d).52
Q132.
Consider the following statements for priority queue:

S1: It is a data structure in which the intrinsic ordering of the elements does determine the result of its basic operations.
S2: The elements of a priority queue may be complex structures that are ordered on one or several fields.

Which of the following is correct?

a.

Both S1 and S2 are incorrect

b.

S1 is correct and S2 is incorrect

c.

SI is incorrect and S2 is correct

d.

Both S1 and S2 are correct

Discuss
Answer: (d).Both S1 and S2 are correct
Q133.
Give as good a big-O estimate as possible for the following functions:

(nlogn+n^2)(n^3+2) and (n!+2^n)(n^3+log(n^2+ 1))

a.

O(n^5+2n^2) & O(n^3*n!)

b.

O(n^5) & O(n^3*2^n)

c.

O(n^5) & O(n^3*n!)

d.

O(n^5+2n^2) & O(n^3*2^n)

Discuss
Answer: (c).O(n^5) & O(n^3*n!)
Q134.
In any n-element heap, the number of nodes of height h is

a.

less than equal to [n/2^h]

b.

greater than [n/2^h]

c.

greater than [n/2^h+1]

d.

less than equal to [n/2^h+1]

Discuss
Answer: (d).less than equal to [n/2^h+1]
Q135.
A vertex cover of an undirected graph G(V, E) is a subset V1 ⊆ V vertices such that

a.

Each pair of vertices in V1 is connected by an edge

b.

If (u, v) ∈ E then u ∈ V1 and v ∈ V1

c.

If (u, v) ∈ E then u ∈ V1 or v ∈ V1

d.

All pairs of vertices in V1 are not connected by an edge

Discuss
Answer: (c).If (u, v) ∈ E then u ∈ V1 or v ∈ V1
Q136.
Suppose you want to delete the name that occurs before “Vivek” in an alphabetical listing. Which of the following data structures shall be most efficient for this operation?

a.

Circular linked list

b.

Doubly linked list

c.

Linked list

d.

Dequeue

Discuss
Answer: (b).Doubly linked list
Q137.
Consider the tree given below. Using the property of eccentricity of a vertex, find every vertex that is the centre of the given tree.

a.

d&h

b.

c&k

c.

g, b, c, h, i, m

d.

c&h

Discuss
Answer: (d).c&h
Q138.
Two graphs A and B are shown below. Which one of the following statement is true ?

a.

Both A and B are planar.

b.

Neither A nor B is planar.

c.

A is planar and B is not.

d.

B is planar and A is not.

Discuss
Answer: (a).Both A and B are planar.
Q139.
The postfix expression AB+CD–* can be evaluated using a

a.

stack

b.

tree

c.

queue

d.

linked list

Discuss
Answer: (a).stack
Q140.
The post order traversal of a binary tree is DEBFCA. Find out the preorder traversal.

a.

ABFCDE

b.

ADBFEC

c.

ABDECF

d.

None of the above

Discuss
Answer: (c).ABDECF
Page 14 of 27

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