Computer Science MCQ Class 11&12 Telegram Channel Link

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Here are 30 MCQs for Class 11 Computer Science (WB Board) Part 1, along with answers:

1. Which of the following is an example of an input device?
- a) Printer
- b) Monitor
- c) Keyboard
- d) Speaker
- Answer: c) Keyboard

2. What does CPU stand for?
- a) Central Processing Unit
- b) Central Print Unit
- c) Central Peripheral Unit
- d) Central Processing Utility
- Answer: a) Central Processing Unit

3. Which of the following is a type of software?
- a) Printer
- b) Keyboard
- c) Operating System
- d) Monitor
- Answer: c) Operating System

4. What is the full form of RAM?
- a) Random Access Memory
- b) Read Access Memory
- c) Read-Only Memory
- d) Randomly Accessed Memory
- Answer: a) Random Access Memory

5. Which device is used to permanently store data?
- a) RAM
- b) ROM
- c) CPU
- d) Monitor
- Answer: b) ROM

6. Which of the following is a database management system?
- a) Microsoft Word
- b) Microsoft Excel
- c) MySQL
- d) Adobe Photoshop
- Answer: c) MySQL

7. Which programming language is known as a high-level language?
- a) Assembly Language
- b) Machine Language
- c) C++
- d) Binary Language
- Answer: c) C++

8. What does GUI stand for?
- a) Graphical User Interface
- b) General User Interface
- c) General Utility Interface
- d) Graphical Utility Interface
- Answer: a) Graphical User Interface

9. Which of the following is a logical operator in programming?
- a) +
- b) *
- c) &&
- d) /
- Answer: c) &&

10. What is the purpose of an operating system?
- a) To manage hardware and software resources
- b) To run applications only
- c) To process data
- d) To store files
- Answer: a) To manage hardware and software resources

11. Which file extension is commonly associated with text files?
- a) .jpg
- b) .exe
- c) .txt
- d) .mp3
- Answer: c) .txt

12. Which of the following is a search engine?
- a) Microsoft Word
- b) Google
- c) Adobe Photoshop
- d) Windows Explorer
- Answer: b) Google

13. What is the purpose of a compiler?
- a) To translate high-level code into machine code
- b) To run the program directly
- c) To debug the code
- d) To store data
- Answer: a) To translate high-level code into machine code

14. What is an algorithm?
- a) A hardware component
- b) A set of instructions to solve a problem
- c) A type of computer virus
- d) A programming language
- Answer: b) A set of instructions to solve a problem

15. Which of the following is an example of a programming language?
- a) Windows 10
- b) Linux
- c) Python
- d) Google Chrome
- Answer: c) Python

16. What does URL stand for?
- a) Uniform Resource Locator
- b) Universal Resource Locator
- c) Uniform Resource Link
- d) Universal Resource Link
- Answer: a) Uniform Resource Locator

17. Which of the following is used to create a web page?
- a) HTML
- b) Python
- c) SQL
- d) Java
- Answer: a) HTML

18. What is the main function of an ALU (Arithmetic Logic Unit)?
- a) To perform arithmetic and logical operations
- b) To manage memory
- c) To control input and output devices
- d) To store data
- Answer: a) To perform arithmetic and logical operations

19. Which of the following is a type of computer network?
- a) LAN
- b) ROM
- c) USB
- d) CPU
- Answer: a) LAN

20. What does 'BIOS' stand for?
- a) Basic Input Output System
- b) Basic Integrated Operating System
- c) Binary Input Output System
- d) Basic Internal Operating System
- Answer: a) Basic Input Output System

21. Which device converts digital signals to analog signals?
- a) Modem
- b) Router
- c) Switch
- d) Hub
- Answer: a) Modem

22. What is the primary function of a firewall?
- a) To protect a network from unauthorized access
- b) To increase the speed of the internet
- c) To store data
- d) To create backups
- Answer: a) To protect a network from unauthorized access

23. What is an operating system's role in managing files?
- a) It organizes, stores, retrieves, and manages files
- b) It only retrieves files
- c) It only stores files
- d) It processes data
- Answer: a) It organizes, stores, retrieves, and manages files

24. Which of the following is a type of software license?
- a) Open Source
- b) USB
- c) RAM
- d) HTML
- Answer: a) Open Source

25. What is a 'bit'?
- a) A unit of data storage
- b) A type of computer virus
- c) A software application
- d) A hardware component
- Answer: a) A unit of data storage

26. Which of the following is used to store large amounts of data?
- a) Hard Disk Drive
- b) Keyboard
- c) Mouse
- d) Monitor
- Answer: a) Hard Disk Drive

27. Which programming construct allows for decision-making?
- a) Loop
- b) Conditional statements
- c) Function
- d) Array
- Answer: b) Conditional statements

28. What does 'HTTP' stand for?
- a) HyperText Transfer Protocol
- b) HyperText Transfer Program
- c) Hyper Transfer Text Protocol
- d) Hyper Transfer Text Program
- Answer: a) HyperText Transfer Protocol

29. Which of the following is a popular web browser?
- a) Notepad
- b) Excel
- c) Firefox
- d) Word
- Answer: c) Firefox

30. In object-oriented programming, what is a 'class'?
- a) A blueprint for creating objects
- b) A data type
- c) A software application
- d) A function
- Answer: a) A blueprint for creating objects

These questions cover a range of topics relevant to Class 11 Computer Science and can be used for review or quizzes.

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