White-Box Test Techniques CTFL Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A test team is designing tests for a safety-critical module. They have access to the source code and want to ensure that every decision outcome is exercised at least once. Which white-box technique should they use to achieve this specific goal?

   • ABlack-box testing
   • BBranch testing
   • CExploratory testing
   • DStatement testing
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2. 2expert · hard

   A test team is working on a legacy system with no source code access. They have been asked to improve test coverage. Which of the following approaches is most appropriate given the constraint of no source code access?

   • AUse branch coverage tools to measure coverage
   • BRequest source code access from the development team
   • CUse black-box testing techniques based on requirements and specifications
   • DUse statement coverage tools to measure coverage
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A test team is working on a project where the source code is available, but the requirements documentation is incomplete. They want to identify defects that might be missed by black-box testing. What is the primary benefit of using white-box testing techniques in this situation?

   • AThey can eliminate the need for black-box testing entirely
   • BThey can verify that the code matches the requirements documentation
   • CThey can automatically fix defects found in the code
   • DThey can systematically exercise code paths and reveal defects in logic that black-box testing might miss
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5. 4foundation · easy

   Which of the following best describes statement testing?

   • AA black-box technique that tests the system's external behavior
   • BA technique that ensures all possible paths through the code are executed
   • CA technique that tests only the error-handling statements in the code
   • DA white-box technique that measures the percentage of executable statements executed by a test suite
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6. 5application · medium

   A test team has achieved 100% statement coverage on a module. The manager asks if this guarantees that all decision outcomes have been tested. What is the correct response?

   • ANo, 100% statement coverage does not guarantee 100% branch coverage
   • BYes, 100% statement coverage implies 100% branch coverage
   • CYes, but only if the module has no loops
   • DNo, but 100% statement coverage guarantees 100% branch coverage if the code is well-commented
   Reveal Solution Discussion Select an answer first