Pros and Cons of Specific Test Selection Criteria CT-MBT Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A team is comparing all-transitions and all-states coverage for a model with many states but relatively few transitions. They want to maximize fault detection while keeping the test suite size manageable. Which statement is true?

   • AAll-transitions coverage will always find more faults than all-states coverage.
   • BAll-states coverage is a subset of all-transitions coverage.
   • CAll-transitions coverage typically requires more test cases than all-states coverage.
   • DAll-states coverage is more suitable for testing the behavior of transitions.
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   How does the 'all-transitions' criterion compare to the 'all-states' criterion in terms of test suite size and fault detection?

   • AAll-transitions requires more test cases but detects more faults.
   • BBoth criteria require the same number of test cases.
   • CAll-states detects more faults but requires more test cases.
   • DAll-transitions requires fewer test cases but detects fewer faults.
   Reveal Solution Discussion Select an answer first
4. 8expert · hard

   A team is testing a model with a loop that can be executed multiple times. They are using all-loop-paths coverage, but they find that the test suite is growing rapidly and many test cases are redundant. They need to reduce the suite size while still testing the loop adequately. What is the best approach?

   • AUse a loop-bound and apply all-transitions coverage
   • BUse all-states coverage
   • CUse all-transition-pairs coverage
   • DSwitch to all-paths coverage
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5. 9foundation · easy

   A testing team needs to verify that every state in a state machine model is reachable and that the system behaves correctly when entering each state. They have limited time and need a relatively small test suite. Which test selection criterion is most appropriate?

   • AAll-transitions
   • BRandom selection
   • CAll-paths
   • DAll-states
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6. 10foundation · easy

   What is a significant drawback of using the 'all-paths' test selection criterion in model-based testing?

   • AIt may require an infinite number of test cases when the model contains loops.
   • BIt requires the model to be acyclic, which is rarely the case.
   • CIt only tests valid input values and ignores invalid ones.
   • DIt does not cover all transitions in the model.
   Reveal Solution Discussion Select an answer first