Lesson 4.1.2.2

4.1.2.2 Procedural-oriented programming and hierarchy charts Quiz: AQA Computer Science, Unit 1

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.1.2.2, Procedural-oriented programming and hierarchy charts: 20 multiple choice questions for the AQA Computer Science (7517), Unit 1: Fundamentals of programming, written with Revision Ninja.

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The 20 questions

  1. What graphical tool represents the hierarchical structure of modules in a procedural program?

    • Entity relationship diagram
    • State transition diagram
    • Hierarchy chart
    • Flowchart

  2. Which component in procedural programming groups a sequence of instructions to perform a specific task?

    • Attribute
    • Subroutine
    • Instance
    • Record

  3. What software design method breaks a complex problem into smaller sub-problems?

    • Bottom-up design
    • Event-driven design
    • Object-oriented design
    • Top-down design

  4. Which design strategy continually decomposes a main problem into smaller sub-tasks?

    • Polymorphism
    • Stepwise refinement
    • Instantiation
    • Encapsulation

  5. A hierarchy chart shows a main module calling three subroutines: input, process and output. How many subroutines are directly called by the main module?

    • 4
    • 2
    • 3
    • 1

  6. What do the lines connecting boxes in a hierarchy chart represent?

    • Iteration loops
    • Selection statements
    • Subroutine calls
    • Data transfers

  7. Why are modular procedural programs easier to test and debug?

    • Automatic bug removal
    • Independent module testing
    • Faster compilation times
    • No global memory

  8. In a hierarchy chart, where are subroutines directly called by main placed?

    • At the bottom
    • Directly above main
    • Inside the main
    • Directly below main

  9. What does a module with two parent modules in a hierarchy chart indicate?

    • Multiple inheritance
    • Code reusability
    • Recursive calling
    • Data encapsulation

  10. What primary relationship between subroutines is shown in a hierarchy chart?

    • Calling structure
    • Memory usage
    • Data transfer
    • Execution order

  11. A programmer decomposes a payroll program into modules: get hours, calculate pay, print slip. What is this an example of?

    • Exception handling
    • Random number generation
    • Object-oriented inheritance
    • Decomposition into subroutines

  12. Which software quality is improved when each module performs only one specific task?

    • Low abstraction
    • Tight coupling
    • High redundancy
    • High cohesion

  13. Which programming paradigm structures code around step-by-step procedures and subroutines?

    • Procedural programming
    • Object-oriented
    • Declarative
    • Functional

  14. Which term describes a module that performs a task and returns no value to its caller?

    • Constant
    • Procedure
    • Record
    • Function

  15. What is true about a module located at the bottom of a hierarchy chart?

    • Is never executed
    • Calls main module
    • Calls no subroutines
    • Contains errors

  16. Which benefit of the structured approach isolates changes to a single output module?

    • Modular maintenance
    • Fast compilation
    • Dynamic binding
    • Code sharing

  17. In a hierarchy chart, where is the top-level main module displayed?

    • On the right
    • In the centre
    • At the bottom
    • At the top

  18. What term describes designing a program from the top-level main module down to detailed sub-routines?

    • Bottom-up design
    • Event-driven design
    • Object-oriented design
    • Top-down design

  19. What process breaks down a main problem into progressively smaller sub-problems?

    • Stepwise refinement
    • Data hiding
    • Polymorphism
    • Class instantiation

  20. Adding a sub-module underneath an existing module in a hierarchy chart represents what process?

    • Stepwise refinement
    • Data abstraction
    • Class instantiation
    • Code compilation

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