b. Test Your Knowledge

🅰️ Section A – Multiple-choice review

(1 mark each – Section A exam style)

1. Which feature of a programming language allows a value to be accessed from any function in a program?

A. Local variable

B. Constant

C. Global variable

D. Parameter

Answer

C. Global variable

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2. Which control structure is most appropriate when the number of repetitions is unknown and depends on user input?

A. FOR

B. WHILE

C. SEQUENCE

D. IF

Answer

B. WHILE

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3. Which operator is used to test whether two values are not equal?

A. ==

B. =

C. !=

D. <=

Answer

C. !=

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4. Which of the following best describes a logic error?

A. The program crashes when dividing by zero

B. The program does not compile due to a missing bracket

C. The program runs but produces incorrect output

D. The program exceeds memory limits

Answer

C. The program runs but produces incorrect output

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5. A validation rule checks that a student's age is between 12 and 18 inclusive. Which validation technique is being applied?

A. Type checking

B. Existence checking

C. Range checking

D. Format checking

Answer

C. Range checking

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🅱️ Section B – Short-answer practice

(2–4 marks each – Section B style)

1. Explain why validation checks must be performed in a specific order. Name the correct order in your response.

(3 marks)

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2. Identify the type of error in the following pseudocode and justify your answer.

total ← 10
count ← 0
average ← total / count
PRINT average

(3 marks)

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3. Describe one situation where a FOR iteration would be more appropriate than a WHILE iteration.

(2 marks)