The development of computer science has been a fascinating journey filled with numerous advancements and milestones.

Early Computing Devices: The history of computer science dates back to the 19th century when early mechanical devices like Charles Babbage’s Analytical Engine and Ada Lovelace’s work on programming concepts laid the foundation for modern computing.

Electronic Computers: The development of electronic computers marked a major breakthrough in computer science. In the mid-20th century, pioneers such as John von Neumann and J. Presper Eckert and John W. Mauchly built the first electronic computers, like ENIAC and EDVAC, which used vacuum tubes and punched cards.

Programming Languages: The invention of high-level programming languages brought about a revolution in computer science. FORTRAN, developed by IBM in the 1950s, was one of the earliest high-level programming languages, followed by languages like COBOL and ALGOL.

Internet and Networking: The advent of the internet in the late 1960s and the development of networking protocols such as TCP/IP revolutionized communication and information sharing. This laid the foundation for the World Wide Web, which was introduced by Tim Berners-Lee in the 1990s.

Artificial Intelligence: Artificial intelligence (AI) emerged as a field of study in the mid-20th century, focusing on developing machines capable of human-like intelligence. Significant advancements in AI, including machine learning and deep learning, have been made in recent decades, leading to applications like image recognition, natural language processing, and autonomous vehicles.

Here we list 30 computer science questions for your quizzes.

• Part 1: 30 computer science quiz questions & answers
• Part 2: Download computer science questions & answers for free
• Part 3: Free online quiz making software – OnlineExamMaker

Part 1: 30 multiple-choice quiz questions about computer science

1. Which of the following programming languages is used for web development?
a) Python
b) Java
c) HTML
d) C++
Answer: c) HTML

2. What does CPU stand for?
a) Central Processing Unit
b) Computer Processing Unit
c) Central Power Unit
d) Computer Power Unit
Answer: a) Central Processing Unit

3. Which data structure follows the Last-In-First-Out (LIFO) principle?
a) Queue
b) Stack
c) Linked List
d) Tree
Answer: b) Stack

4. What does CSS stand for?
a) Computer Style Sheets
b) Cascading Style Sheets
c) Creative Style Sheets
d) Colorful Style Sheets
Answer: b) Cascading Style Sheets

5. Which protocol is used for sending email over the Internet?
a) POP
b) SMTP
c) HTTP
d) FTP
Answer: b) SMTP

6. What is the binary representation of the decimal number 10?
a) 1010
b) 1100
c) 1001
d) 1110
Answer: a) 1010

7. What is the process of converting a high-level programming language into machine code called?
a) Compiling
b) Debugging
c) Interpreting
d) Executing
Answer: a) Compiling

8. Which programming language is known for its use in artificial intelligence and machine learning?
a) C#
b) Python
c) Ruby
d) Swift
Answer: b) Python

9. What is the default file extension for a Java source code file?
a) .java
b) .class
c) .jar
d) .py
Answer: a) .java

10. What does HTML stand for?
a) Hyper Text Markup Language
b) Hyperlink and Text Manipulation Language
c) Home Tool Markup Language
d) High Tech Multimedia Language
Answer: a) Hyper Text Markup Language

11. What is the primary function of an operating system?
a) Run applications
b) Store data
c) Connect to the internet
d) Manage computer resources
Answer: d) Manage computer resources

12. Which data structure allows for efficient search, insertion, and deletion operations in O(log n) time?
a) Stack
b) Queue
c) Array
d) Binary search tree
Answer: d) Binary search tree

13. Which encryption algorithm is commonly used for secure communication on the web?
a) RSA
b) AES
c) SHA
d) MD5
Answer: b) AES

14. Which of the following is a relational database management system (RDBMS)?
a) MongoDB
b) Redis
c) MySQL
d) SQLite
Answer: c) MySQL

15. What does URL stand for?
a) Universal Resource Locator
b) Uniform Resource Locator
c) Universal Reference Locator
d) Uniform Reference Locator
Answer: b) Uniform Resource Locator

16. Which programming paradigm focuses on the use of objects and classes?
a) Procedural programming
b) Object-oriented programming
c) Functional programming
d) Logic programming
Answer: b) Object-oriented programming

Part 2: Download computer science questions & answers for free

17. Which of the following is not a web browser?
a) Google Chrome
b) Mozilla Firefox
c) Microsoft Excel
d) Safari
Answer: c) Microsoft Excel

18. What is the binary representation of the decimal number 25?
a) 11001
b) 10011
c) 10101
d) 11100
Answer: b) 10011

19. What does SQL stand for?
a) Structured Query Language
b) Standard Query Language
c) System Query Language
d) Sequential Query Language
Answer: a) Structured Query Language

20. Which programming language is used to create Android applications?
a) Java
b) C++
c) Swift
d) Python
Answer: a) Java

21. What is the purpose of a firewall?
a) To protect against viruses
b) To prevent unauthorized access to a network
c) To speed up internet connectivity
d) To store and retrieve data
Answer: b) To prevent unauthorized access to a network

22. Which of the following is an example of a high-level programming language?
a) Assembly language
b) Machine language
c) C language
d) Binary code
Answer: c) C language

23. Which data structure uses a First-In-First-Out (FIFO) approach?
a) Stack
b) Queue
c) Tree
d) Linked List
Answer: b) Queue

24. What is the purpose of an index in a database?
a) To speed up search operations
b) To store large amounts of data
c) To create relationships between tables
d) To perform mathematical calculations
Answer: a) To speed up search operations

25. Which programming language is often used for game development?
a) Java
b) C#
c) Ruby
d) PHP
Answer: b) C#

26. What is the default port number for HTTP?
a) 80
b) 443
c) 21
d) 22
Answer: a) 80

27. What is the purpose of an IDE in software development?
a) To write code
b) To debug code
c) To compile and run code
d) All of the above
Answer: d) All of the above

28. Which programming language is commonly used for data analysis and statistical computing?
a) Python
b) JavaScript
c) R
d) PHP
Answer: c) R

29. What does DNS stand for?
a) Domain Name System
b) Dynamic Name Service
c) Digital Network System
d) Distributed Network Service
Answer: a) Domain Name System

30. Which of the following is an example of a non-volatile storage device?
a) RAM
b) SSD
c) CPU
d) Cache
Answer: b) SSD

Part 3: Free online quiz creator software – OnlineExamMaker

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