Top-notch Data Structures Test - 79+ MCQs: Data Structures Quiz: Test Your Knowledge with Challenging Questions and Answers

1. Which data structure is used to implement recursion?

Array

Stack

Queue

Linked List

2. What is the purpose of a 'spanning tree' in graph theory?

To represent hierarchical relationships between data

To find the minimum spanning tree

To perform matrix multiplication

To store elements in a sorted array

3. What is the time complexity of searching in a balanced binary search tree?

O(1)

O(log n)

O(n)

O(n log n)

4. In graph theory, what is the primary purpose of the Tarjan's strongly connected components algorithm?

To find the minimum spanning tree

To perform topological sorting

To detect cycles in a graph

To identify groups of nodes with mutual reachability

5. What is the primary function of a doubly linked list?

To store elements of different data types

To store elements of the same data type

To allow traversal in both forward and backward directions

To perform constant time access

6. How is a circular linked list different from a regular linked list?

It allows elements of different data types

It has a fixed size

It has a cycle in the pointers, forming a closed loop

It has constant time access to any element

7. Which of the following is an example of a non-linear data structure?

Array

Linked List

Binary Tree

Queue

8. What is the purpose of a hash table in data structures?

To store data in a sorted array

To efficiently find the minimum or maximum element in a set

To implement depth-first traversal of a tree

To map keys to values for quick retrieval

9. What is the purpose of the 'Floyd-Warshall algorithm' in graph theory?

To find the shortest path between two nodes

To perform topological sorting

To detect cycles in a graph

To find the minimum spanning tree

10. What is the role of the 'head' in a linked list?

It points to the middle element

It points to the last element

It indicates the size of the linked list

It points to the first element

11. What is the primary purpose of a persistent data structure?

To store elements in a sorted array

To guarantee constant time access

To maintain previous versions of the data

To optimize search operations

12. What is the key characteristic of a priority queue?

Random access to elements

Elements are processed in a last-in-first-out order

Elements are processed in a first-in-first-out order

Each element has an associated priority

13. In the context of data structures, what is a suffix tree used for?

To efficiently search for overlapping intervals

To represent hierarchical relationships between data

To store intervals of time

To search for patterns in strings

14. What distinguishes a splay tree from other binary search trees?

It allows for constant time access to any element

It maintains balance using rotations

It has a fixed size

It has a circular structure

15. What is the primary advantage of using a Fibonacci heap over other heap data structures?

Guaranteed constant time access

Reduced memory consumption

Optimized sorting of elements

Amortized constant time operations for decrease key and delete

16. In the context of data structures, what does 'deterministic' mean?

Randomized processing of elements

Predictable and repeatable outcomes

No clear rules for element access

Constant time complexity

17. In graph theory, what does the 'articulation point' of a graph represent?

The node with the highest degree

A node that, when removed, increases the number of connected components

The central node of the graph

The node with the lowest degree

18. What distinguishes a 'skip list' from a regular linked list?

It is a type of tree data structure

It uses pointers to skip elements during search operations

It has a fixed size

It allows for constant time access to any element

19. In a linked list, what is the difference between singly linked and doubly linked lists?

Singly linked lists have nodes pointing to the previous and next nodes, while doubly linked lists only point to the next node.

Doubly linked lists have nodes pointing to the previous and next nodes, while singly linked lists only point to the next node.

Both singly and doubly linked lists only point to the next node.

Singly linked lists have a circular structure, while doubly linked lists do not.

20. In the context of data structures, what is the primary advantage of using an implicit treap?

Guaranteed constant time access

Balanced structure with random priorities

Optimized sorting of elements

Efficient storage and retrieval of strings

Data Structures MCQ Test 4