Lesson 4.1.1.8

4.1.1.8 Random numbers and exception handling Quiz: AQA Computer Science, Unit 1

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.1.1.8, Random numbers and exception handling: 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 is the defining characteristic of values generated by a random number function?

    • Sequentially increasing values
    • Unpredictable within range
    • Fixed constant values
    • Deterministic repeating sequence

  2. Which data generation method is best suited to simulate rolling a standard six-sided die?

    • String to integer
    • Random float 0-1
    • Random integer 1-6
    • Sequential integer counter

  3. What is an exception in programming?

    • Hardware component failure
    • Logical algorithm flaw
    • Unexpected runtime error
    • Syntax compilation error

  4. What keyword is used in Python to define a block of code for exception handling?

    • catch
    • except
    • error
    • try

  5. Which language construct is used to catch and handle runtime exceptions?

    • While loop
    • If-else statement
    • Try-catch block
    • For loop

  6. Which component typically handles an unhandled exception crashing a program?

    • Interpreter
    • Programmer
    • Operating System
    • Compiler

  7. What values can a random integer generator set to range 10-20 inclusive return?

    • Only integers 11-19
    • Only 10 or 20
    • Any integer 10-20
    • Any number 10-20

  8. What outcome suggests a pseudo-random generator is unseeded or misused?

    • Out-of-bounds error
    • Increasing numeric sequence
    • Fractional values only
    • Repeated identical outputs

  9. Why is exception handling needed when converting user string input to an integer?

    • Input non-numeric
    • Input already integer
    • Input too large
    • Memory limit reached

  10. A random integer from 1 to 4 is generated, and one is added to it. What range of values is possible?

    • 1 to 4
    • 2 to 5
    • 0 to 4
    • 1 to 5

  11. Which data type is returned by a random generator producing decimal values between 0 and 1?

    • Integer
    • String
    • Real
    • Boolean

  12. What type of error does exception handling primarily protect against during execution?

    • Logical error
    • Compile error
    • Syntax error
    • Runtime error

  13. How does exception handling improve user experience during invalid data entry?

    • Exits the software
    • Auto-corrects spelling
    • Hides the keyboard
    • Allows input retry

  14. If a pseudo-random number generator outputs 3, what is guaranteed on the next call?

    • It outputs 3 again
    • It outputs 2
    • Nothing is guaranteed
    • It outputs 4

  15. Which integer range selects a random item from a zero-indexed array of 5 elements?

    • 1 to 5
    • 0 to 4
    • 0 to 5
    • 1 to 4

  16. What primary structural benefit does exception handling provide in software design?

    • Eliminates all bugs
    • Speeds up compilation
    • Separates error logic
    • Reduces file size

  17. Which random generation setting best simulates a fair two-sided coin flip?

    • Integer from 1 to 3
    • Real from 0 to 1
    • Integer from 0 to 1
    • Real from 0 to 2

  18. What term describes computer-generated numbers that simulate true randomness?

    • Truly random numbers
    • Sequential numbers
    • Binary digits
    • Pseudo-random numbers

  19. Which programming techniques drive unpredictable flow and protect against errors?

    • Recursive and sorted
    • Static and global
    • Linear and iterative
    • Random and exception

  20. What is the chance of a fair six-sided die giving a 6 on one roll?

    • 1 in 36
    • 1 in 2
    • 6 in 1
    • 1 in 6

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