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Computer Basics Quiz

Free practice quiz on Computer Basics Quiz with detailed solutions for government exam preparation.

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About This Quiz

Computer Basics Quiz is a free, 25-minute, 25-mark practice quiz on AajExam rated at easy difficulty, designed to help candidates preparing for SSC, UPSC, Banking, Railway and State PSC government competitive exams sharpen their command of Computer Fundamentals (Haryana Police) (Computer). Every question on this quiz ships with a detailed step-by-step solution so you don't just learn the right answer — you learn the reasoning and shortcuts top scorers use to crack similar questions faster on the actual exam day. Why Computer Basics Quiz matters in your preparation: government exam-conducting bodies repeatedly draw questions from the same chapters and the same skill-clusters across recruitment cycles. By attempting focused topic-wise quizzes like this one, you build pattern recognition — the ability to spot which formula, rule or trick applies the moment you see a question. Toppers consistently report that 5-10 quizzes on a single topic delivers more exam-day score gain than 20+ unfocused full-length mocks, because targeted drilling exposes your specific sub-topic weaknesses with surgical precision. How to use this quiz effectively: attempt it in one sitting under the 25-minute timer, without referring to notes or external resources — simulate exam-day conditions exactly. After submission, review the auto-generated analytics to see your accuracy, time per question and section-wise performance. Then go through every wrong and skipped question with the explanation, mentally tagging the underlying concept rather than just memorising the answer. Revisit this quiz after 7-10 days; your second attempt should be 15-20% faster with noticeably better accuracy. Bookmark this page and revisit weekly as we add new quizzes on related topics. AajExam quiz design principles: every quiz on the platform is curated by subject experts using the actual question formats, difficulty distributions and time pressures of the target government exams. We deliberately avoid generic "textbook" questions in favour of exam-replicating ones. Solutions are written in plain English (and Hindi where source material was bilingual), with step-by-step working for quantitative problems, grammar rules for English questions, and direct reference statements for general awareness items. Performance analytics after each attempt include accuracy, attempt rate, time spent per question, and an estimated all-India percentile so you know exactly where you stand against other candidates. This quiz is completely free to attempt. You only need a free AajExam account to track your performance across attempts, view detailed solutions and unlock the platform-wide analytics dashboard. The platform is mobile-friendly and works seamlessly on smartphones, tablets and desktops — so you can sharpen your Computer Fundamentals (Haryana Police) (Computer) skills in any spare 15-minute window.

Computer Basics Quiz — Questions with Solutions

All 25 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.

  1. Q1.The full form of CPU is:

    • A.Central Processing Unit
    • B.Central Program Unit
    • C.Computer Processing Utility
    • D.Central Processor Utility
    Show answer

    Answer: A. Central Processing Unit

    CPU stands for Central Processing Unit.

  2. Q2.Which of the following is the smallest unit of data in a computer?

    • A.Byte
    • B.Bit
    • C.Nibble
    • D.Word
    Show answer

    Answer: B. Bit

    A bit is the smallest unit of data, representing 0 or 1.

  3. Q3.Which device converts digital signals to analog and vice versa for internet connectivity?

    • A.Modem
    • B.Printer
    • C.Scanner
    • D.Monitor
    Show answer

    Answer: A. Modem

    A modem modulates/demodulates signals for internet access.

  4. Q4.MS Excel is mainly used for:

    • A.Creating spreadsheets and performing calculations
    • B.Editing photos
    • C.Playing videos
    • D.Browsing the internet
    Show answer

    Answer: A. Creating spreadsheets and performing calculations

    MS Excel is spreadsheet software used for data and calculations.

  5. Q5.Which of these is a popular web browser?

    • A.Google Chrome
    • B.MS Word
    • C.Excel
    • D.PowerPoint
    Show answer

    Answer: A. Google Chrome

    Google Chrome is a widely used web browser.

  6. Q6.The full form of PDF is:

    • A.Portable Document Format
    • B.Printable Document File
    • C.Personal Data File
    • D.Public Document Format
    Show answer

    Answer: A. Portable Document Format

    PDF stands for Portable Document Format.

  7. Q7.Which key combination is used to select all content in a document?

    • A.Ctrl + A
    • B.Ctrl + S
    • C.Ctrl + P
    • D.Ctrl + Z
    Show answer

    Answer: A. Ctrl + A

    Ctrl + A selects all content in most applications.

  8. Q8.A firewall in computing is used mainly to:

    • A.Protect a network from unauthorized access
    • B.Increase internet speed
    • C.Store large files
    • D.Print documents
    Show answer

    Answer: A. Protect a network from unauthorized access

    Firewalls monitor and control network traffic for security.

  9. Q9.Which of these is a valid email service provider?

    • A.Gmail
    • B.MS Word
    • C.Photoshop
    • D.VLC
    Show answer

    Answer: A. Gmail

    Gmail is a widely used email service.

  10. Q10.The full form of Wi-Fi is:

    • A.Wireless Fidelity
    • B.Wired Fidelity
    • C.Wireless Network
    • D.Wide Internet
    Show answer

    Answer: A. Wireless Fidelity

    Wi-Fi commonly stands for Wireless Fidelity.

  11. Q11.Which of these is an example of secondary storage?

    • A.RAM
    • B.Hard disk
    • C.Cache memory
    • D.Register
    Show answer

    Answer: B. Hard disk

    A hard disk provides permanent secondary storage.

  12. Q12.The process of starting or restarting a computer is called:

    • A.Booting
    • B.Formatting
    • C.Compiling
    • D.Debugging
    Show answer

    Answer: A. Booting

    Booting refers to the startup process of a computer.

  13. Q13.Which shortcut key is used to undo an action?

    • A.Ctrl + Z
    • B.Ctrl + Y
    • C.Ctrl + X
    • D.Ctrl + U
    Show answer

    Answer: A. Ctrl + Z

    Ctrl + Z undoes the last action in most software.

  14. Q14.A computer virus is best described as:

    • A.A malicious program that can harm data or systems
    • B.A type of hardware component
    • C.A network cable
    • D.An antivirus tool
    Show answer

    Answer: A. A malicious program that can harm data or systems

    A virus is malicious software designed to damage or disrupt systems.

  15. Q15.Which of these is an example of an operating system for smartphones?

    • A.Android
    • B.MS Word
    • C.Excel
    • D.Photoshop
    Show answer

    Answer: A. Android

    Android is a widely used mobile operating system.

  16. Q16.RAM capacity is generally measured in:

    • A.Bytes/Gigabytes
    • B.Watts
    • C.Volts
    • D.Hertz only
    Show answer

    Answer: A. Bytes/Gigabytes

    RAM size is measured in bytes, typically GB.

  17. Q17.Which device is used to capture printed documents or images into digital form?

    • A.Scanner
    • B.Speaker
    • C.Printer
    • D.Projector
    Show answer

    Answer: A. Scanner

    A scanner digitizes physical documents or images.

  18. Q18.The full form of CD-ROM is:

    • A.Compact Disc Read-Only Memory
    • B.Central Disc Read Only Memory
    • C.Compact Data Read-Only Module
    • D.Central Data Read Only Memory
    Show answer

    Answer: A. Compact Disc Read-Only Memory

    CD-ROM stands for Compact Disc Read-Only Memory.

  19. Q19.Cloud computing mainly refers to:

    • A.Storing and accessing data over the internet
    • B.Printing documents wirelessly
    • C.Playing music offline
    • D.Charging a laptop battery
    Show answer

    Answer: A. Storing and accessing data over the internet

    Cloud computing provides remote storage and computing resources via the internet.

  20. Q20.Which of these is a widely used search engine?

    • A.Google
    • B.MS Word
    • C.Excel
    • D.Windows Media Player
    Show answer

    Answer: A. Google

    Google is one of the most widely used search engines.

  21. Q21.The shortcut key to open a new document/window in most applications is:

    • A.Ctrl + N
    • B.Ctrl + O
    • C.Ctrl + P
    • D.Ctrl + M
    Show answer

    Answer: A. Ctrl + N

    Ctrl + N typically creates a new document or window.

  22. Q22.Which of these best describes 'hardware'?

    • A.The physical components of a computer
    • B.Programs and instructions
    • C.Internet connections only
    • D.Data files only
    Show answer

    Answer: A. The physical components of a computer

    Hardware refers to the tangible physical parts of a computer.

  23. Q23.Which of these best describes 'software'?

    • A.Physical circuit boards
    • B.Programs and instructions that run on a computer
    • C.Keyboard and mouse
    • D.Monitor and printer
    Show answer

    Answer: B. Programs and instructions that run on a computer

    Software consists of programs and instructions executed by hardware.

  24. Q24.The full form of IP address is:

    • A.Internet Protocol address
    • B.Internal Program address
    • C.Internet Program address
    • D.Internal Protocol address
    Show answer

    Answer: A. Internet Protocol address

    IP address stands for Internet Protocol address.

  25. Q25.Which of the following best describes an 'operating system'?

    • A.Software that manages hardware and provides a platform for applications
    • B.A type of printer
    • C.A network cable
    • D.An antivirus program only
    Show answer

    Answer: A. Software that manages hardware and provides a platform for applications

    An OS manages hardware resources and enables application software to run.

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Frequently Asked Questions

Is Computer Basics Quiz free to attempt on AajExam?

Yes. Computer Basics Quiz is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.

How long does it take to complete Computer Basics Quiz?

Computer Basics Quiz runs on a 25-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.

Are detailed solutions provided?

Yes. Every question on Computer Basics Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.

Can I attempt Computer Basics Quiz multiple times?

Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.

Which government exams does this quiz prepare me for?

Computer Fundamentals (Haryana Police) questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.