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Computer Fundamentals MCQs

Basic computer MCQs on hardware, memory, units and common terms, asked in clerk, assistant and IT recruitment tests.

10 MCQsUpdated 27 October 2026

Start here if you are new to computer awareness. These MCQs cover the basic parts of a computer, units of memory such as kilobytes and megabytes, common keyboard shortcuts, and the difference between hardware, software and operating systems.

Questions at this level appear in almost every clerk, assistant and junior-post paper. They are easy marks if your basics are clear, so work through the set until you can answer each question without looking at the options.

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  1. 1

    CPU stands for:

    Correct answer: A. Central Processing Unit

    The Central Processing Unit (CPU) carries out program instructions and is often called the brain of the computer.

    easy
  2. 2

    Who is known as the "Father of the Computer"?

    Correct answer: B. Charles Babbage

    Charles Babbage designed the Analytical Engine in the 1830s. It was the first design for a general-purpose mechanical computer.

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    easy
  3. 3

    One byte is equal to:

    Correct answer: B. 8 bits

    A byte is 8 bits. A bit is a single binary digit, 0 or 1.

    easy
  4. 4

    1 Kilobyte (KB) is equal to:

    Correct answer: C. 1024 bytes

    In the binary system used in most exams, 1 KB = 1024 bytes (2¹⁰).

    easy
  5. 5

    Which type of memory loses its data when power is switched off?

    Correct answer: B. RAM

    RAM is volatile memory, so it needs power to keep data. ROM, hard disks and flash drives are non-volatile.

    easy
  6. 6

    Which of the following is an input device?

    Correct answer: C. Keyboard

    A keyboard sends data into the computer. Monitors, printers and speakers are output devices.

    easy
  7. 7

    The keyboard shortcut to copy selected text in Windows is:

    Correct answer: C. Ctrl + C

    Ctrl + C copies, Ctrl + X cuts, Ctrl + V pastes and Ctrl + Z undoes.

    easy
  8. 8

    HTTP stands for:

    Correct answer: A. HyperText Transfer Protocol

    HTTP (HyperText Transfer Protocol) is the protocol used to transfer web pages. HTTPS is its encrypted version.

    easy
  9. 9

    The default file extension of a Microsoft Word document (2007 and later) is:

    Correct answer: B. .docx

    Word 2007 and later save files as .docx by default. Older versions used .doc, and .xlsx is an Excel workbook.

    easy
  10. 10

    Which of the following is an operating system?

    Correct answer: C. Windows

    Windows is an operating system. MS Word is a word processor, Chrome is a web browser and Oracle is a database system.

    easy