Using Models to Detect Defects CTAL-TA Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   How can analyzing a data model help in deriving test cases that reveal defects?

   • ABy generating test cases that violate data constraints to check if the system handles them correctly
   • BBy determining the optimal order of test execution
   • CBy calculating the total number of test cases needed
   • DBy identifying all possible user interface interactions
   Reveal Solution Discussion Select an answer first
2. 22application · medium

   A test analyst has created a state transition model for a vending machine. The model includes states: Idle, Accepting Coins, Item Selected, Dispensing, and Out of Order. The analyst wants to derive test cases that cover all possible transitions between these states. Which model-based testing technique should be used?

   • ATransition coverage, which requires executing every transition at least once.
   • BDecision coverage, which requires each decision outcome to be true and false at least once.
   • CState coverage, which requires visiting every state at least once.
   • DPath coverage, which requires executing every possible path through the model.
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   Which limitation is associated with model-based defect detection?

   • AIt can detect all types of defects, including performance issues
   • BIt requires no specialized skills to create models
   • CIt is only applicable to object-oriented systems
   • DIt can only detect defects that are represented in the model
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5. 24expert · hard

   A test analyst is using a state model to generate test cases for a system that controls a nuclear reactor's cooling system. The model has a state 'Emergency Shutdown' that can be reached from multiple states. The analyst wants to ensure that the emergency shutdown is tested from every possible state. Which coverage criterion should be used?

   • ATransition coverage, which requires testing every transition in the model.
   • BState coverage, which requires visiting every state at least once.
   • CPath coverage, which requires testing every possible path through the model.
   • DA custom coverage criterion that requires testing the transition to 'Emergency Shutdown' from every state that has such a transition.
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   A test analyst is considering using model-based testing for a small project with a tight deadline. The team has no prior experience with model-based testing. What is the most significant challenge they are likely to face?

   • AThe team will need to purchase expensive tools that are not budgeted.
   • BThe model will be too simple to detect any real defects.
   • CThe cost and time required to create and validate the model may outweigh the benefits for a small project.
   • DThe model will generate too few test cases to be useful.
   Reveal Solution Discussion Select an answer first