White-Box Test Techniques CTFL Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is a limitation of white-box testing?

   • AIt is only useful for finding syntax errors
   • BIt can only be applied to small programs
   • CIt requires no knowledge of the internal code structure
   • DIt may miss defects that are not related to the internal logic, such as performance issues or usability problems
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2. 17application · medium

   A developer has written a function with a switch statement that has 4 cases and a default case. The test team wants to ensure that every executable statement in the function is executed at least once. Which white-box technique should they apply?

   • ABoundary value analysis
   • BEquivalence partitioning
   • CStatement testing
   • DBranch testing
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4. 18foundation · easy

   What is the primary purpose of branch testing?

   • ATo execute every possible path through the code
   • BTo execute every branch (decision outcome) in the code at least once
   • CTo execute every loop iteration
   • DTo execute every executable statement in the code at least once
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5. 19expert · hard

   A test team is working on a module with a loop that can execute zero or more times. They have achieved 100% branch coverage. The project manager asks if this ensures that the loop has been tested with multiple iterations. What is the correct response?

   • AYes, but only if the loop has a fixed number of iterations
   • BYes, 100% branch coverage ensures the loop has been tested with multiple iterations
   • CNo, 100% branch coverage does not guarantee that the loop has been tested with multiple iterations
   • DNo, but 100% branch coverage ensures the loop body is executed at least once
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6. 20expert · hard

   A test team is working on a safety-critical system. They have achieved 100% branch coverage on a module. The safety auditor asks if this is sufficient to guarantee the module is defect-free. What is the correct response?

   • ANo, but 100% branch coverage guarantees that all possible input values have been tested
   • BYes, 100% branch coverage guarantees the module is defect-free
   • CNo, 100% branch coverage does not guarantee the absence of defects
   • DYes, but only if statement coverage is also 100%
   Reveal Solution Discussion Select an answer first