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Top 25 Computer Awareness Questions for Competitive Exams 2026


Top 25 Computer Awareness Questions for Competitive Exams 2026

If you are preparing for upcoming government exams, Computer Awareness is a scoring section. Below are the most repeated and important computer MCQs and one-liners designed to help you ace your preparation.

Fundamental & Hardware Questions

1. Who is known as the 'Father of Modern Computing'? Answer: Charles Babbage. (Note: Alan Turing is often called the Father of Modern Computer Science).

2. Which was the first general-purpose electronic digital computer in the world? Answer: ENIAC (Electronic Numerical Integrator and Computer).

3. What is the full form of CPU, and what are its three main components? Answer: Central Processing Unit. Its components are the Control Unit (CU), Arithmetic Logic Unit (ALU), and Memory Unit (Registers).

4. Which generation of computers introduced Integrated Circuits (ICs)? Answer: Third Generation (1964–1971).

5. Which device is used to connect a computer to a telephone line for internet access? Answer: Modem (Modulator-Demodulator).

Memory & Storage Concepts

6. What is the difference between RAM and ROM? Answer: RAM (Random Access Memory) is volatile (data is lost when power is off) and used for temporary storage. ROM (Read Only Memory) is non-volatile and contains permanent instructions (like BIOS).

7. Arrange the following in ascending order: TB, KB, GB, MB. Answer: KB < MB < GB < TB.

8. What is a 'Nibble' in computer terminology? Answer: A Nibble is equal to 4 bits (or half a byte).

9. Which type of memory is the fastest in a computer system? Answer: Cache Memory (followed by Registers).

10. What is the binary equivalent of the decimal number 8? Answer: 1000.

Operating Systems & Software

11. Which of the following is an example of 'System Software'? Answer: Operating Systems (like Windows, Linux, macOS).

12. What is the function of an 'Interpreter' in programming? Answer: It translates high-level language programs into machine code line-by-line.

13. What does 'GUI' stand for? Answer: Graphical User Interface.

14. Which command is used to permanently delete a file without sending it to the Recycle Bin in Windows? Answer: Shift + Delete.

15. What is 'Open Source Software'? Answer: Software whose source code is available for anyone to inspect, modify, and enhance (e.g., Linux, Android, VLC).

Networking & Internet

16. What is the full form of 'HTTP' and 'HTTPS'? Answer: Hypertext Transfer Protocol and Hypertext Transfer Protocol Secure.

17. Which protocol is used for sending emails over the internet? Answer: SMTP (Simple Mail Transfer Protocol).

18. What is an 'IP Address' and how many bits are in an IPv4 address? Answer: It is a unique numerical label for devices on a network. An IPv4 address has 32 bits, while an IPv6 address has 128 bits.

19. What does 'DNS' stand for in networking? Answer: Domain Name System (it translates domain names like https://www.google.com/search?q=google.com into IP addresses).

20. Which network topology requires a central 'Hub' or 'Switch' to connect all nodes? Answer: Star Topology.

Cyber Security & MS Office

21. What is 'Phishing' in cybercrime? Answer: A fraudulent attempt to obtain sensitive information (usernames, passwords) by disguising as a trustworthy entity in an electronic communication.

22. Which shortcut key is used to 'Undo' the last action in MS Word? Answer: Ctrl + Z.

23. What is the maximum number of rows in an MS Excel 2010/2016 worksheet? Answer: 1,048,576.

24. What is the shortcut key to start a Slideshow from the first slide in MS PowerPoint? Answer: F5.

25. Which type of malware records every key pressed on a keyboard to steal passwords? Answer: Keylogger.

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