Examples of Test Selection Criteria CT-MBT Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   Which statement best describes the role of test selection criteria in model-based testing?

   • AThey define the test environment setup
   • BThey specify the format of test reports
   • CThey control the test generation process by selecting a subset of possible test cases
   • DThey determine the order in which test cases are executed
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   What is a characteristic of random test selection in model-based testing?

   • AIt always selects the same test cases for the same model
   • BIt selects test cases without a predefined rule based on chance
   • CIt ensures that all requirements are covered
   • DIt uses a deterministic algorithm to cover all paths
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4. 23application · medium

   A team has a model where some transitions are rarely used but have severe consequences if they fail, while others are frequently used but have low impact. They have a limited test budget and want to maximize the detection of high-impact failures. Which selection approach should they use?

   • ACoverage-based criteria targeting 100% branch coverage
   • BRequirement-based criteria
   • CRandom selection
   • DRisk-based criteria prioritizing high-impact transitions
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5. 24expert · hard

   A safety-critical system has a model where some transitions are extremely rare but have catastrophic consequences if they fail. The team has a limited test budget and must decide between achieving 100% branch coverage or focusing on the high-risk transitions. Which approach best balances the need for safety and the budget constraint?

   • AUse only risk-based criteria and ignore branch coverage
   • BUse only branch coverage and ignore risk
   • CAchieve 100% branch coverage first, then test high-risk transitions if budget remains
   • DPrioritize high-risk transitions using risk-based criteria, then supplement with branch coverage for the remaining budget
   Reveal Solution Discussion Select an answer first
6. 25expert · hard

   A team is using random selection to generate test cases from a large model. They notice that the generated tests are not covering some important branches. They want to improve the coverage without significantly increasing the test budget. Which approach is most effective?

   • AUse risk-based criteria to select tests
   • BIncrease the number of random tests generated
   • CUse a hybrid approach: generate random tests, measure coverage, and add targeted tests for uncovered branches
   • DSwitch to branch coverage criteria entirely
   Reveal Solution Discussion Select an answer first