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Computer hardware

6 Class 9 Computer Science questions with answers and explanations.

Printable worksheet with answer key

All questions with answers

  1. RAM stands for:

    • 1 Read Access Memory
    • 2 Rapid Active Memory
    • 3 Remote Access Machine
    • 4 Random Access Memory
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    Correct answer: Random Access Memory

    RAM is Random Access Memory.

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  2. Which memory loses its data when power is switched off?

    • 1 RAM
    • 2 Hard disk
    • 3 ROM
    • 4 USB drive
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    Correct answer: RAM

    RAM is volatile.

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  3. Which of these is a storage device?

    • 1 Monitor
    • 2 Mouse
    • 3 Keyboard
    • 4 Hard disk
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    Correct answer: Hard disk

    A hard disk stores data permanently.

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  4. The unit that performs arithmetic and logic operations in the CPU is the:

    • 1 Control unit
    • 2 ALU
    • 3 Register
    • 4 Cache
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    Correct answer: ALU

    ALU stands for Arithmetic Logic Unit.

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  5. 1 kilobyte is about:

    • 1 1 million bytes
    • 2 100 bytes
    • 3 1000 bytes
    • 4 10 bytes
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    Correct answer: 1000 bytes

    1 KB is about 1000 bytes (1024 in binary terms).

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  6. A touch screen is both an input and an:

    • 1 Software
    • 2 Network
    • 3 Storage device
    • 4 Output device
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    Correct answer: Output device

    It displays output and accepts touch input.

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More Computer Science topics
Introduction to computers
Software
Number systems
Networks and the internet