FBISE · Class 9

Class 9 Computer Science MCQs: Computer Systems

Practice chapter-wise MCQs with answers and explanations. Use the quiz mode for timed online tests.

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Quick revision

Class 9 Computer Science MCQs Computer Systems are one of the fastest ways to improve your board exam performance — especially when you practice with purpose, revise weak concepts, and learn from explanations.

On Prepzy, you can practice 103 MCQs from “Computer Systems” in Computer Science for FBISE. Each question is designed to mirror the style, wording, and concept-testing approach used in Pakistani board papers.

Use this chapter page to revise definitions, formulas, and key ideas, then attempt the MCQs in small sets. Track patterns in your mistakes: is it a concept gap, a calculation error, or a misread statement? Fixing the pattern is what raises your score.

If you’re preparing for matric / SSC Part exams, focus on understanding the concept first, then speed. MCQs reward clarity — not memorization. A clear concept turns into fast correct answers.

What to focus on

  • Primary focus: Computer Systems concepts tested in Class 9 Computer Science
  • Practice with instant answer-checking to reduce repeated mistakes
  • Revise common definitions, units, and standard results before timed practice
  • Aim for accuracy first, then build speed with short quizzes

Study tips

  • Read the question stem first, then scan options for distractors (near-correct choices).
  • If the chapter is formula-heavy, write a mini-formula sheet and revise it before every attempt.
  • After each practice set, re-attempt only the wrong MCQs to convert weak areas into strengths.
  • Mix easy + medium MCQs for momentum, then finish with hard questions for exam readiness.

MCQs (sample)

Showing 25 questions from this chapter. For a full timed test, use “Start online test”.

  1. 1. What is Software Engineering primarily focused on?

    • Development, operation, and maintenance of software
    • Designing physical components of computer systems
    • Quality checks in hardware manufacturing
    • Creating digital circuits only
    Answer & explanation

    Correct: Development, operation, and maintenance of software

    Software Engineering is focused on the systematic approach to the development, operation, and maintenance of software.

  2. 2. What refers to how data moves between components like the CPU, memory, and storage in a computer system?

    • Data transmission
    • Data processing
    • Data storage
    • Data input
    Answer & explanation

    Correct: Data transmission

    Data transmission is the process that describes how data moves between components in a computer system.

  3. 3. What does data communication refer to?

    • Exchanging data between devices via a transmission medium
    • Storing data on a hard drive
    • Displaying data on a monitor
    • Encrypting information for security
    Answer & explanation

    Correct: Exchanging data between devices via a transmission medium

    Data communication involves exchanging data or information between devices through a medium.

  4. 4. What is the primary purpose of computer software?

    • To tell a computer how to perform specific tasks
    • To provide hardware components
    • To replace operating systems
    • To maintain hardware
    Answer & explanation

    Correct: To tell a computer how to perform specific tasks

    Computer software tells a computer how to perform specific tasks or functions.

  5. 5. What is memory in computing?

    • Physical devices used to store programs or data
    • Only the part of the CPU
    • Networking components of a computer
    • Software applications loaded on the computer
    Answer & explanation

    Correct: Physical devices used to store programs or data

    Memory refers to the physical devices used to store programs and data in a computer or other digital devices.

  6. 6. What is a system?

    • A collection of interconnected components working together to achieve specific goals.
    • A random grouping of elements with no purpose.
    • A type of artificial intelligence.
    • An unchangeable set of tools.
    Answer & explanation

    Correct: A collection of interconnected components working together to achieve specific goals.

    A system is defined as a collection of interconnected components working together to achieve specific goals.

  7. 7. What is the main function of input devices in a computer system?

    • Provide data and instructions to the computer
    • Display processed information visually
    • Store data for long-term retention
    • Control the power supply of the computer
    Answer & explanation

    Correct: Provide data and instructions to the computer

    Input devices are designed to facilitate interaction between users and the computer by providing data and instructions.

  8. 8. What is a computer?

    • A programmable electronic device that performs operations automatically
    • A mechanical tool for arithmetic calculations
    • A type of manual counting device
    • An ancient tool for data storage
    Answer & explanation

    Correct: A programmable electronic device that performs operations automatically

    A computer is defined as a programmable electronic device that performs arithmetic and logical operations automatically using a set of instructions.

  9. 9. Who first published the Von Neumann Architecture concept?

    • John Von Neumann
    • Alan Turing
    • Charles Babbage
    • Ada Lovelace
    Answer & explanation

    Correct: John Von Neumann

    John Von Neumann first published the Von Neumann Architecture in 1945.

  10. 10. Which type of Software Engineering develops applications like web applications and mobile apps?

    • Application Software Engineering
    • System Software Engineering
    • Enterprise Software Engineering
    • Game Development
    Answer & explanation

    Correct: Application Software Engineering

    Application Software Engineering focuses on developing software applications that fulfill specific user requirements.

  11. 11. Which component specifies where the data should go in a computer's bus system?

    • Address bus
    • Data bus
    • Control bus
    • Data register
    Answer & explanation

    Correct: Address bus

    The address bus is responsible for specifying the destination of the data within a computer's bus system.

  12. 12. Which component converts electrical signals into a suitable form for transmission?

    • Receiver
    • Medium
    • Sender
    • Protocol
    Answer & explanation

    Correct: Sender

    The sender converts electrical signals into a suitable form for transmission over the network.

  13. 13. Which of the following is NOT a type of system software?

    • Operating System
    • Database Management Software
    • Device Drivers
    • Utilities
    Answer & explanation

    Correct: Database Management Software

    Database Management Software is typically classified as application software, not system software.

  14. 14. What is the smallest unit of memory?

    • Bit
    • Byte
    • Kilobyte
    • Megabyte
    Answer & explanation

    Correct: Bit

    A bit is the smallest unit of memory, representing a binary digit (0 or 1).

  15. 15. Which of the following is an example of a natural system?

    • Ecosystems
    • Communication networks
    • Manufacturing systems
    • Power plants
    Answer & explanation

    Correct: Ecosystems

    Natural systems include ecosystems like forests, while communication networks are artificial systems.

  16. 16. Which of the following is NOT considered an input device?

    • Keyboard
    • Mouse
    • Monitor
    • Scanner
    Answer & explanation

    Correct: Monitor

    A monitor is an output device, displaying information visually, while keyboard, mouse, and scanner are input devices.

  17. 17. Which of the following is NOT an early computing device?

    • Analytical Engine
    • Tabulating Machine
    • Quantum Computer
    • Mark-I Computer
    Answer & explanation

    Correct: Quantum Computer

    Quantum computers are a modern invention and not considered an early computing device.

  18. 18. In what year was the Von Neumann Architecture published?

    • 1945
    • 1950
    • 1960
    • 1970
    Answer & explanation

    Correct: 1945

    The Von Neumann Architecture was published in 1945 by John Von Neumann.

  19. 19. What does System Software Engineering involve?

    • Designing and developing software platforms for other software
    • Creating video games and engines
    • Developing mobile applications
    • Testing hardware components
    Answer & explanation

    Correct: Designing and developing software platforms for other software

    System Software Engineering involves designing and developing software that provides a platform for other software to run on.

  20. 20. What is managed by the control bus in a computer system?

    • Signals for actions like read and write
    • Data transfer speed
    • Storage size
    • Memory allocation
    Answer & explanation

    Correct: Signals for actions like read and write

    The control bus manages the signals for actions such as reading and writing in a computer system.

  21. 21. Which of the following is NOT a mode of network communication?

    • Simplex
    • Multiplex
    • Half-duplex
    • Full-duplex
    Answer & explanation

    Correct: Multiplex

    Multiplex is not mentioned as a mode of network communication; the modes include Simplex, Half-duplex, and Full-duplex.

  22. 22. What role does an operating system (OS) play in a computer system?

    • Manages hardware resources and services for programs
    • Creates applications for the user
    • Instantly converts high-level programming languages
    • Directly communicates with the user only
    Answer & explanation

    Correct: Manages hardware resources and services for programs

    The OS manages hardware resources and provides services for computer programs, facilitating user interaction.

  23. 23. How many bits are there in one byte?

    • 8
    • 4
    • 16
    • 32
    Answer & explanation

    Correct: 8

    One byte is made up of 8 bits.

  24. 24. What characterizes natural systems?

    • They are human-designed and built.
    • They can adapt and evolve autonomously.
    • They are structured and simpler.
    • They require maintenance to function.
    Answer & explanation

    Correct: They can adapt and evolve autonomously.

    Natural systems are characterized by their ability to adapt and evolve autonomously, unlike artificial systems.

  25. 25. What component serves as the backbone of the computer?

    • Input devices
    • Motherboard
    • Storage devices
    • Output devices
    Answer & explanation

    Correct: Motherboard

    The motherboard is the main circuit board and serves as the backbone of the computer, connecting all components.

FAQs

Are these Class 9 Computer Science MCQs Computer Systems aligned with FBISE?

Yes. The MCQs are organized chapter-wise for FBISE and designed to match board exam patterns. If your teacher has added custom MCQs, they will also appear here.

How many MCQs should I practice from “Computer Systems” each day?

A good daily target is 20–40 MCQs with full review of mistakes. If you’re short on time, do 15 MCQs but read explanations carefully.

What’s the best way to revise this chapter before an exam?

Revise the chapter summary, list your weak sub-topics, then practice MCQs in timed sets. Re-attempt wrong questions after a short break to lock in learning.

Can I take an online test for this chapter?

Yes. Start a chapter quiz to simulate an online test. Use it to improve speed and accuracy under time pressure.

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