Question 1

What data structure uses a Last In, First Out (LIFO) principle?

Accepted Answer

Stack

Answer

Array

Answer

Queue

Answer

Linked List

Question 2

Which of the following is a method of sorting data in a list?

Accepted Answer

Quick Sort

Answer

Binary Search

Answer

Hashing

Answer

Linear Search

Question 3

What type of data structure is used to implement a hierarchical organization of data?

Accepted Answer

Tree

Answer

Hash Table

Answer

Graph

Answer

Array

Question 4

Which of the following is NOT a characteristic of a relational database?

Accepted Answer

Hierarchical structure

Answer

Data Integrity

Answer

Tables and Relations

Answer

Structured Query Language (SQL)

Question 5

What does the term 'normalization' refer to in database design?

Accepted Answer

Organizing data to reduce redundancy

Answer

Encrypting data for security

Answer

Backing up data for recovery

Answer

Indexing data for faster access

Question 6

Which of the following is a common operation performed on a queue data structure?

Accepted Answer

Enqueue

Answer

Dequeue

Answer

Peek

Answer

Reverse

Question 7

What is the primary purpose of a hash function in data structures?

Accepted Answer

To convert data into a fixed-size value

Answer

To encrypt sensitive information

Answer

To store data in a tree structure

Answer

To sort data in ascending order

Question 8

What is the main advantage of using a binary search tree over a regular binary tree?

Accepted Answer

Faster search times

Answer

Simpler implementation

Answer

Easier to understand

Answer

More memory usage

Question 9

What is a key characteristic of a linked list?

Accepted Answer

Dynamic size

Answer

Fixed size

Answer

Stored in contiguous memory

Answer

Random access

Question 10

Which of the following describes an advantage of using a binary heap data structure?

Accepted Answer

Fast access to the minimum or maximum element

Answer

No need for tree balancing

Answer

Random access to any element

Answer

Constant time insertion

Question 11

What data structure uses nodes and pointers to represent relationships and is often used for dynamic memory allocation?

Accepted Answer

Linked List

Answer

Stack

Answer

Queue

Answer

Array

Question 12

Which of the following sorting algorithms has the best average-case time complexity?

Accepted Answer

Quick Sort

Answer

Bubble Sort

Answer

Insertion Sort

Answer

Selection Sort

Question 13

What is the primary purpose of normalization in database design?

Accepted Answer

To reduce data redundancy

Answer

To increase data redundancy

Answer

To simplify data types

Answer

To improve query speed

Question 14

What type of data structure is used to implement a LIFO (Last In, First Out) principle?

Accepted Answer

Stack

Answer

Tree

Answer

Array

Answer

Queue

Question 15

Which of the following data types allows for the representation of both integer numbers and decimal numbers in programming?

Accepted Answer

Float

Answer

Character

Answer

String

Answer

Integer

Question 16

Which algorithm is commonly used for finding the shortest path in a weighted graph?

Accepted Answer

Dijkstra's Algorithm

Answer

Depth First Search

Answer

Bubble Sort

Answer

Merge Sort

Question 17

In relational databases, what is the purpose of a primary key?

Accepted Answer

To uniquely identify each record in a table

Answer

To link two tables together

Answer

To store large amounts of text

Answer

To sort data in a table

Question 18

Which of the following best describes a binary tree?

Accepted Answer

A tree data structure where each node has at most two children

Answer

A graph with only two vertices

Answer

A linear structure with one parent and many children

Answer

A tree where nodes can have any number of children

Question 19

Which of the following is a feature of a stack data structure?

Accepted Answer

Push and pop operations

Answer

Dynamic resizing of elements

Answer

Traversal using recursion

Answer

Enqueue and dequeue operations

Question 20

Which data structure uses a Last In First Out (LIFO) principle?

Accepted Answer

Stack

Answer

Linked List

Answer

Array

Answer

Queue

Question 21

What type of database model uses a tree structure to represent relationships?

Accepted Answer

Hierarchical Model

Answer

Network Model

Answer

Relational Model

Answer

Object-Oriented Model

Question 22

Which of the following is not a characteristic of a relational database?

Accepted Answer

Data is stored in unstructured formats

Answer

Relationships between data are defined by foreign keys

Answer

Data can be accessed using SQL

Answer

Data is stored in tables

Question 23

What is the purpose of normalization in database design?

Accepted Answer

To reduce data redundancy

Answer

To increase data redundancy

Answer

To enforce security protocols

Answer

To optimize database performance

Question 24

What does the term 'data abstraction' refer to in computer science?

Accepted Answer

Hiding the complex details and only exposing the necessary parts

Answer

Storing data in physical memory

Answer

Using multiple databases for a single application

Answer

Representing data in a binary format

Question 25

Which data structure is best suited for implementing a priority queue?

Accepted Answer

Heap

Answer

Linked List

Answer

Array

Answer

Stack

Question 26

In which of the following data structures can elements be accessed directly using an index?

Accepted Answer

Array

Answer

Stack

Answer

Linked List

Answer

Queue

Question 27

What is the main purpose of an Entity-Relationship (ER) diagram?

Accepted Answer

To visually represent the relationships between entities in a database

Answer

To map the user interface design

Answer

To outline the functions of a software application

Answer

To define the algorithms used in data processing

Question 28

Which of the following is an advantage of using a relational database?

Accepted Answer

Data integrity and accuracy

Answer

Higher complexity in querying

Answer

Limited data access

Answer

Data stored in a non-standard format

Question 29

What is the main benefit of using indexes in a database?

Accepted Answer

Faster query performance

Answer

Automatic data backups

Answer

Simplified database structure

Answer

Increased data redundancy

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