04.01 Control Structures In Python - Quiz

Check your understanding

1. What are the three fundamental control structures in programming?

   • Input, Processing, Output
   • Variables, Functions, Classes
   • Sequence, Selection, Iteration { data-correct }
   • If, While, For

2. In Python, which statement is used to make decisions based on conditions?

   • for
   • while
   • if { data-correct }
   • def

3. What will this code print?

   for i in range(3):
       print(i)
   

   • 1, 2, 3
   • 0, 1, 2 { data-correct }
   • 3, 2, 1
   • 1, 2, 3, 4

4. Which Python keyword is used to create an alternative condition in an if statement?

   • else if
   • elif { data-correct }
   • elseif
   • otherwise

5. What type of loop should you use when you know exactly how many times you want to repeat something?

   • while loop
   • for loop { data-correct }
   • do-while loop
   • repeat loop

6. What will happen with this code?

   count = 1
   while count <= 3:
       print(count)
   

   • Prints 1, 2, 3 and stops
   • Prints nothing
   • Creates an infinite loop { data-correct }
   • Causes a syntax error

7. In the range range(2, 8, 2), what numbers will be generated?function

   • 2, 4, 6 { data-correct }
   • 2, 4, 6, 8
   • 0, 2, 4, 6, 8
   • 2, 3, 4, 5, 6, 7

8. Which logical operator would you use to check if BOTH conditions are true?

   • or
   • and { data-correct }
   • not
   • xor

9. What is the correct way to structure a nested if statement in Python?

   • Use curly braces {} to group code blocks
   • Use proper indentation to show which code belongs to each if { data-correct }
   • Use semicolons to separate conditions
   • Use parentheses around the entire block

10. In a while loop, when does the loop stop executing?

    • When the condition becomes true
    • When the condition becomes false { data-correct }
    • After exactly 10 iterations
    • When a break statement is encountered

11. Which control structure is being used in this pseudocode?

    IF score >= 90 THEN
        grade = "A"
    ELIF score >= 80 THEN
        grade = "B"
    ELSE
        grade = "C"
    

    • Sequence
    • Selection { data-correct }
    • Iteration
    • Function

12. What is a common mistake that causes “off-by-one” errors in for loops?

    • Using the wrong variable name
    • Incorrect range boundaries { data-correct }
    • Missing indentation
    • Using while instead of for