Data Structures: Master the Fundamentals of Data Organization

Question 1

How does the choice of hash function affect the performance of a hash table?

Accepted Answer

The hash function influences the distribution of keys within the hash table.

Answer

The size of the hash table is directly determined by the hash function.

Answer

The hash function is irrelevant to the performance of the hash table.

Answer

The hash function has no impact on the time complexity of search and insert operations.

Question 2

Which of the following is **NOT** considered a fundamental data structure commonly taught in computer science?

Accepted Answer

Object-oriented class

Answer

Array

Answer

Linked list

Answer

Hash table

Question 3

In a linked list of size n, what is the time complexity of searching for a specific element?

Accepted Answer

O(n)

Answer

O(1)

Answer

O(n^2)

Answer

O(log n)

Question 4

Which data structure is specifically designed for implementing a last-in-first-out (LIFO) behavior?

Accepted Answer

Stack

Answer

Queue

Answer

Array

Answer

Linked list

Question 5

What is the key distinction between a binary tree and a binary search tree?

Accepted Answer

Binary trees allow duplicate values, while binary search trees do not.

Answer

Binary trees are inherently sorted, while binary search trees are not.

Answer

Binary search trees are always balanced, while binary trees are not.

Answer

There is no fundamental difference between binary trees and binary search trees.

Question 6

In a hash table, what is the primary purpose of a hash function?

Accepted Answer

Efficiently mapping keys to corresponding values.

Answer

Identifying and removing duplicate keys.

Answer

Sorting the data within the hash table.

Answer

Deleting data from the hash table.

Question 7

When inserting an element at the beginning of a linked list, what is the time complexity of the operation?

Accepted Answer

O(1)

Answer

O(n)

Answer

O(n^2)

Answer

O(log n)

Question 8

Which of the following data structures is considered non-linear?

Accepted Answer

Tree

Answer

Array

Answer

Linked list

Answer

Queue

Question 9

In an AVL tree, what is the main purpose of the balancing factor in ensuring efficient search and insertion operations?

Accepted Answer

The balancing factor maintains the balance of the AVL tree, enabling efficient search and insertion operations.

Answer

The balancing factor has no effect on the efficiency of search and insertion operations.

Answer

The balancing factor is only used to determine the height of the tree.

Answer

The balancing factor is only relevant during insertion operations.

Question 10

Which data structure represents a linear sequence of elements, where each element points to the next element?

Accepted Answer

Linked List

Answer

Array

Answer

Stack

Answer

Queue

Question 11

Which data structure employs a Last-In-First-Out (LIFO) principle for element access?

Accepted Answer

Stack

Answer

Array

Answer

Linked List

Answer

Queue

Question 12

Which data structure is suitable for implementing a breadth-first search algorithm efficiently?

Accepted Answer

Queue

Answer

Array

Answer

Linked List

Answer

Stack

Question 13

Which data structure is commonly used to model a network of nodes connected by edges?

Accepted Answer

Graph

Answer

Array

Answer

Linked List

Answer

Stack

Question 14

What is a key advantage of using an array data structure?

Accepted Answer

Provides efficient random access to elements

Answer

Supports dynamic adjustment of size

Answer

Allows efficient insertion and deletion of elements

Answer

Can store complex data types

Question 15

Which data structure is designed to efficiently store and retrieve data using a key-value pair mechanism?

Accepted Answer

Hash Map

Answer

Array

Answer

Linked List

Answer

Stack

Question 16

Which data structure is commonly employed to implement a priority queue?

Accepted Answer

Heap

Answer

Array

Answer

Linked List

Answer

Queue

Question 17

Which of the following operations is NOT performed on a stack?

Accepted Answer

Sort

Answer

Push

Answer

Pop

Answer

Peek

Question 18

A linked list is a data structure where elements are stored in:

Accepted Answer

Non-contiguous memory locations

Answer

Contiguous memory locations

Answer

Both contiguous and non-contiguous memory locations

Answer

Neither contiguous nor non-contiguous memory locations

Question 19

Which of the following is an advantage of using arrays as a data structure?

Accepted Answer

Efficient random access

Answer

Dynamic memory allocation

Answer

Ease of insertion and deletion

Answer

Reduced time complexity for search operations

Question 20

A binary tree is a tree data structure where each node can have a maximum of:

Accepted Answer

Two child nodes

Answer

Three child nodes

Answer

Four child nodes

Answer

No child nodes

Question 21

Which of the following is a disadvantage of using a queue data structure?

Accepted Answer

Inefficient random access

Answer

Difficult to implement

Answer

Slow insertion and deletion operations

Answer

High memory consumption

Question 22

Which of the following is NOT a type of graph traversal?

Accepted Answer

Bottom-up traversal

Answer

Depth-first search

Answer

Breadth-first search

Answer

Topological sort

Question 23

A hash table is a data structure that uses a:

Accepted Answer

Hash function to map keys to values

Answer

Binary search tree to store key-value pairs

Answer

Linked list to store data items

Answer

Array to store data in contiguous memory locations