ISTQB Advanced Test Analyst (ATA) — Question 7

You are testing the processing of a critical traffic control system to which various regulations apply. The processing of the input variables is dependent of defined ranges within which the actual retrieved data values can lie.
Which of the following test techniques will you use to the processing functionality of the traffic control system?

Answer options

• A. defect taxonomies
• B. exploratory testing
• C. equivalence partitioning enhanced with boundary value analysis
• D. state transition testing

Correct answer: C

Explanation

The correct answer is C because equivalence partitioning combined with boundary value analysis effectively tests input ranges and their limits, which is crucial for the traffic control system's processing functionality. Options A and B do not specifically target the range-based processing requirements, while option D focuses on state transitions rather than input value ranges.