Data Structures and Algorithms MCQ Questions and Answers. MCQ on Data Structures and Algorithms with Answers. DSA MCQ Questions.

Are you a computer science student looking for Data Structures and Algorithms MCQ Questions and Answers to help prepare for your upcoming exams?

If so, you’ve come to the right place! In this article, we’ll provide you with a comprehensive list of MCQs related to Data Structures and Algorithms. The questions cover a range of topics from basic to advanced level, making them ideal for students of all levels.

## What is Data Structures and Algorithms

Data structures and algorithms are two of the most fundamental concepts in computer science. They form the building blocks upon which all software is built. Data structures refer to the ways in which data is organized within a program, while algorithms are the set of instructions that manipulate that data.

The importance of these concepts cannot be understated. Without a solid understanding of data structures, developers would find it difficult to manage and access large amounts of data efficiently.

Similarly, without a strong grasp on algorithms, developers would struggle to create programs that perform complex tasks quickly and accurately.

As technology continues to evolve at an unprecedented pace, there has never been a more important time for aspiring programmers to master these foundational concepts. It is essential for anyone looking to work in software development or related fields to understand how data structures and algorithms work together to make modern computing possible.

#### Data Structures and Algorithms MCQ

1. Data structures can be divided into ___ types

A) One

B) Two

B) Three

D) Four

Ans: B

2. In the linked list the elements are connected by the link field which contains the address of the ___

A) Next Node

B) Previous node

C) The Last node

D) None of these

Ans: A

3. ___ is a data structure in which insertions and deletions are restricted at one end, called the top.

A) Linked Lists

B) Trees

C) Graph

D) Stack

Ans: D

4. The process to find the location of the record with the given key value is called ___

A) Traversing

B) Sorting

C) Searching

D) Deletion

Ans: C

5. The floor and ceiling functions are also called ___ or ___ integer functions.

A) Greater, least

B) Least, greater

C) Small, greater

D) Big, small

Ans: A

6. A ___ of a set of n elements is an arrangement of the elements in a given order.

A) Combination

B) Permutation

C) Group

D) None of these

Ans: B

7. An algorithm is a ___ procedure in the normal English language for solving a particular problem.

A) Random

B) Complicated

C) Both A and B

D) Step by step

Ans: D

8. The number of cases involved in complexity theory are ___

A) Three

B) Two

C) Four

D) Five

Ans: A

9. Traversing a linked list means processing each node of the list exactly ___.

A) Twice

B) Thrice

C) Once

D) None of these

Ans: C

10. The operating system of a computer may periodically collect all the deleted space onto the free storage list and this technique is called ___.

A) Memory management

B) Garbage Collection

C) Memory allocation

D) Memory Deallocation

Ans: B

11. In ___, the null pointer in the last node is replaced with the address of the first node so that it forms a circle.

A) Doubly linked list

B) Linear linked list

C) Circular doubly linked list

D) Circular linked list

Ans: D

12. ___ is the process of removing a node from the linked list.

A) Traversal

B) Searching

C) Insertion

D) Deletion

Ans: D

13. The two basic operations in the stack are ___.

A) Insertion and deletion

B) Searching and sorting

C) Push and pop

D) None of these

Ans: C

14. Before executing push operation one must check for the ___ condition.

A) Underflow

B) Overflow

C) Full

D) Empty

Ans: B

15. In linked list representation of stack, push operation is performed by inserting a node into the ___ of the linked list.

A) End

B) Middle

C) Front

D) None of these

Ans: C

16. Before executing the pop operation we must check for the ___ condition.

A) Underflow

B) Overflow

C) Full

D) Empty

Ans: A

17. A ___ is a non-linear data structure consisting of a root node.

A) Stack

B) Queue

C) Tree

D) Graph

Ans: C

18. ___ connects nodes with one another in a tree data structure.

A) Root

B) Degree

C) Siblings

D) Edge

Ans: D

19. A ___ is a special case of the tree where no node of a tree can have a degree more than two.

A) Forest

B) Leaves

C) Binary Tree

D) Root

Ans: C

20. In ___ traversal, traversal starts with the leftmost subtree.

A) Inorder

B) Preorder

C) Postorder

D) Both A and B

Ans: C

21. General tree can be converted into an equivalent binary tree, but this process makes the tree imbalanced.

A) True

B) False

Ans: A

22. Incomplete tree is very efficient in memory management.

A) True

B) False

Ans: B

23. Binary search tree (BST) is also known as ___

A) Ordered binary tree

B) Unordered Binary tree

C) Sequential Binary tree

D) Unbalanced Binary tree

Ans: A

24. If we are trying to delete a ___ node in a binary search tree just delete that node and the rest of the tree is left as it is.

A) Root node

B) Leaf node

C) Node with two children

D) Node with one child

Ans: B

25. Which tree has a balancing factor?

A) AVL tree

B) Binary tree

C) Complete binary tree

D) Strictly Binary tree

Ans: A