ISTQB Certified Tester Advanced Level – Test Analyst (CTAL-TA) — Question 34

What are ways in which classification trees support the application of pairwise testing?

a. They help to identify inputs to be used by the pairwise test technique b. They show the combinations needed to cover all-pairs c. They help to identify particular combinations of interest d. They show both typical and atypical behavior e. They show the expected results for the various test cases

Answer options

• A. b and c
• B. b, d and e
• C. a, b and c
• D. c and e

Correct answer: C

Explanation

The correct answer is C because classification trees help in identifying the relevant inputs for pairwise testing (option a), provide the combinations required to cover all pairs (option b), and highlight specific combinations that are of interest (option c). Options B and D include elements that do not directly support pairwise testing in the same way as options a, b, and c do.