A test team is using both black-box and white-box testing techniques. They have achieved high coverage using white-box techniques but still want to ensure the system meets user requirements. What is the primary limitation of white-box testing that the team should consider?

It can only be used for unit testing

It is more expensive than black-box testing

It requires access to the source code

It cannot verify that the system meets the user's requirements

A module contains an if-else statement with two possible outcomes (true and false). A test case executes the code path where the condition evaluates to true, but no test case exercises the false outcome. What is the branch coverage of this module?

Cannot be determined without knowing the number of statements

A test team is designing tests for a module with a complex decision structure. They have a limited budget and can only execute a small number of test cases. They want to maximize the number of decision outcomes exercised. Which approach should they take?

Execute test cases randomly to cover as many branches as possible

Analyze the decision structure and design test cases that exercise multiple uncovered branches in a single test case

Focus on statement coverage instead of branch coverage

Use equivalence partitioning to select test inputs

Certified Tester Foundation Level

Domain 4Objective 2

White-Box Test Techniques CTFL Practice Questions (Page 3)

Part of the Domain 4: Test Analysis and Design domain, which makes up ~13% of our current practice bank. ISTQB does not publish an official question count, but from its 60-minute exam (~25–40 total, ~3–5 in this domain), expect 1–1 from this objective — we provide 23 practice questions to prepare you well beyond it. (estimate)

23questions here

5free pages

5concepts

Questions 11–15

11application · medium
A test team is using both black-box and white-box testing techniques. They have achieved high coverage using white-box techniques but still want to ensure the system meets user requirements. What is the primary limitation of white-box testing that the team should consider?
Select an answer first
12application · medium
A code module has 20 executable statements and 8 decision outcomes (branches). After running a test suite, the coverage tool reports that 15 statements were executed and 6 branches were exercised. What is the statement coverage percentage?
Select an answer first
13application · medium
A module contains an if-else statement with two possible outcomes (true and false). A test case executes the code path where the condition evaluates to true, but no test case exercises the false outcome. What is the branch coverage of this module?
Select an answer first
14foundation · easy
A program has 4 branches (decision outcomes). A test suite executes 3 of them. What is the branch coverage percentage?
Select an answer first
15expert · hard
A test team is designing tests for a module with a complex decision structure. They have a limited budget and can only execute a small number of test cases. They want to maximize the number of decision outcomes exercised. Which approach should they take?
Select an answer first

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White-Box Test Techniques CTFL Practice Questions (Page 3)

Questions 11–15

A test team is using both black-box and white-box testing techniques. They have achieved high coverage using white-box techniques but still want to ensure the system meets user requirements. What is the primary limitation of white-box testing that the team should consider?

A code module has 20 executable statements and 8 decision outcomes (branches). After running a test suite, the coverage tool reports that 15 statements were executed and 6 branches were exercised. What is the statement coverage percentage?

A module contains an if-else statement with two possible outcomes (true and false). A test case executes the code path where the condition evaluates to true, but no test case exercises the false outcome. What is the branch coverage of this module?

A program has 4 branches (decision outcomes). A test suite executes 3 of them. What is the branch coverage percentage?

A test team is designing tests for a module with a complex decision structure. They have a limited budget and can only execute a small number of test cases. They want to maximize the number of decision outcomes exercised. Which approach should they take?

Keep studying — Domain 4: Test Analysis and Design