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Exam Code: CTFL v4.0

Exam Name Certified Tester Foundation Level (CTFL) v4.0

Certification Provider: ISTQB

Corresponding Certification: CTFL

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ISTQB CTFL v4.0 Practice Test 73

Question 720

A quality engineering exercise presents this condition: A service team automates its Gherkin scenarios with step definitions that always return success regardless of the application's actual state. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Trace each important acceptance criterion to a representative example.
  2. Run periodic mutation or intentional-failure checks against ATDD step definitions.
  3. Check business observability and independence from implementation during criteria review.
  4. Use both routine checklists and evidence-led exploration for suspicious behavior.

Explanation

Correct Answer

B:

This safeguard specifically targets the contributing cause: Run periodic mutation or intentional-failure checks against ATDD step definitions. It addresses the principle (Executable acceptance specifications require real observable checks, not green steps with no oracle.) and can be assessed by: A seeded wrong price causes the appropriate acceptance scenario to fail before correction.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 4.5): A transport app team's Gherkin check asserts only that the booking page loads, though the story requires a fare quote to match luggage choices. The targeted safeguard for the current case is: Run periodic mutation or intentional-failure checks against ATDD step definitions.

C:

This preventive step mitigates a different project risk (syllabus section 4.5): A billing feature lists acceptance criteria that depend on a hidden internal database column not visible to stakeholders, making the result impossible to verify from business behavior. The targeted safeguard for the current case is: Run periodic mutation or intentional-failure checks against ATDD step definitions.

D:

This preventive step mitigates a different project risk (syllabus section 4.4): A team follows a fixed smoke checklist through a stable feature but refuses to explore a newly observed intermittent timeout that might hide a broader outage. The targeted safeguard for the current case is: Run periodic mutation or intentional-failure checks against ATDD step definitions.

Question 721

A software testing team encounters the following project situation: An agile banking team writes different expected amounts in unit tests and acceptance examples because they were specified by different groups without collaboration. Which testing activity or corrective action best addresses this situation?

  1. Align business rules and worked examples across tester, developer and product owner.
  2. Collaboratively refine the story with concrete examples and testable acceptance criteria.
  3. Specify acceptance criteria using customer type, qualifying basket value and explicit expected discount.
  4. Choose immediate valid-domain neighbors 99, 100, 101 and 499, 500, 501.

Explanation

Correct Answer

A:

The targeted action is: Align business rules and worked examples across tester, developer and product owner. It addresses the underlying software-testing principle: Collaborative acceptance testing improves shared understanding and prevents conflicting test bases. The relevant confirming evidence is: The same approved numerical example produces matching expected values at component and acceptance levels.

Incorrect Answers

B:

This choice is a useful response to a different testing situation (section 4.5, Collaboration-based Test Approaches): A product owner writes the user story 'As a customer I want faster checkout' with no measurable behavior, and developers and testers assume different interpretations. The present problem instead depends on: Collaborative acceptance testing improves shared understanding and prevents conflicting test bases.

C:

This choice is a useful response to a different testing situation (section 4.5, Collaboration-based Test Approaches): An e-commerce story has one acceptance sentence, 'the discount works', and the tester cannot determine which customer segments qualify. The present problem instead depends on: Collaborative acceptance testing improves shared understanding and prevents conflicting test bases.

D:

This choice is a useful response to a different testing situation (section 4.2, Black-Box Test Techniques): A warehouse selector accepts product weights in integer grams 100–500, but one test contains 99.5 grams even though the interface accepts only integers. The present problem instead depends on: Collaborative acceptance testing improves shared understanding and prevents conflicting test bases.

Question 722

A software testing team encounters the following project situation: An agile banking team writes different expected amounts in unit tests and acceptance examples because they were specified by different groups without collaboration. Which observation best verifies that the stated testing issue is addressed?

  1. Different luggage selections produce correct documented fares in the automated example.
  2. The same approved numerical example produces matching expected values at component and acceptance levels.
  3. A stakeholder can confirm the accepted billing output without direct access to implementation internals.
  4. The case set includes a valid month and rejects 0 and 13 consistently.

Explanation

Correct Answer

B:

This is the expected verification outcome: The same approved numerical example produces matching expected values at component and acceptance levels. It directly checks the corrective activity (Align business rules and worked examples across tester, developer and product owner.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: A transport app team's Gherkin check asserts only that the booking page loads, though the story requires a fare quote to match luggage choices. It does not establish the required result for this case: The same approved numerical example produces matching expected values at component and acceptance levels.

C:

This result may validate another testing scenario: A billing feature lists acceptance criteria that depend on a hidden internal database column not visible to stakeholders, making the result impossible to verify from business behavior. It does not establish the required result for this case: The same approved numerical example produces matching expected values at component and acceptance levels.

D:

This result may validate another testing scenario: A subscription form accepts plans for 1–12 months, but the suite tests 2, 3 and 4 months while never testing an invalid number. It does not establish the required result for this case: The same approved numerical example produces matching expected values at component and acceptance levels.

Question 723

A software testing team encounters the following project situation: An agile banking team writes different expected amounts in unit tests and acceptance examples because they were specified by different groups without collaboration. Which testing concept or underlying cause best explains the reported problem?

  1. Acceptance examples should communicate relevant failure behavior as well as successful scenarios.
  2. Executable acceptance specifications require real observable checks, not green steps with no oracle.
  3. Collaborative acceptance testing improves shared understanding and prevents conflicting test bases.
  4. Boundary values must respect input type and granularity; out-of-domain decimals are not adjacent integer values.

Explanation

Correct Answer

C:

The most relevant explanation is: Collaborative acceptance testing improves shared understanding and prevents conflicting test bases. This describes why the original situation (An agile banking team writes different expected amounts in unit tests and acceptance examples because they were specified by different groups without collaboration.) merits the response: Align business rules and worked examples across tester, developer and product owner.

Incorrect Answers

A:

This principle could explain a different testing issue: A product team writes acceptance examples for the happy path only and discovers after release that malformed address input crashes shipping label creation. The present case is better explained by: Collaborative acceptance testing improves shared understanding and prevents conflicting test bases.

B:

This principle could explain a different testing issue: A service team automates its Gherkin scenarios with step definitions that always return success regardless of the application's actual state. The present case is better explained by: Collaborative acceptance testing improves shared understanding and prevents conflicting test bases.

D:

This principle could explain a different testing issue: A warehouse selector accepts product weights in integer grams 100–500, but one test contains 99.5 grams even though the interface accepts only integers. The present case is better explained by: Collaborative acceptance testing improves shared understanding and prevents conflicting test bases.

Question 724

A software testing team encounters the following project situation: An agile banking team writes different expected amounts in unit tests and acceptance examples because they were specified by different groups without collaboration. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Trace each important acceptance criterion to a representative example.
  2. Discuss race and conflict cases during three-way story conversations.
  3. Review shared examples before deriving checks at different levels.
  4. Use condition-outcome maps for modules with several decisions.

Explanation

Correct Answer

C:

This safeguard specifically targets the contributing cause: Review shared examples before deriving checks at different levels. It addresses the principle (Collaborative acceptance testing improves shared understanding and prevents conflicting test bases.) and can be assessed by: The same approved numerical example produces matching expected values at component and acceptance levels.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 4.5): A transport app team's Gherkin check asserts only that the booking page loads, though the story requires a fare quote to match luggage choices. The targeted safeguard for the current case is: Review shared examples before deriving checks at different levels.

B:

This preventive step mitigates a different project risk (syllabus section 4.5): A restaurant app story describes table booking but omits what happens if two customers reserve the last table simultaneously. The targeted safeguard for the current case is: Review shared examples before deriving checks at different levels.

D:

This preventive step mitigates a different project risk (syllabus section 4.3): A parser contains two independent if decisions and the tester executes only an input that makes both conditions true. The targeted safeguard for the current case is: Review shared examples before deriving checks at different levels.

Question 725

During a release-readiness review, a tester observes: A testing lead prepares a one-page plan listing only individual test scripts, with no scope, schedule, risks, environment, or completion criteria. Which testing activity or corrective action best addresses this situation?

  1. Establish a test plan covering scope, approach, resources, risks, schedule and clear completion conditions.
  2. If using PERT, apply (optimistic + 4×most likely + pessimistic)/6 to these assumptions.
  3. Rebalance towards many fast focused component tests, fewer integration tests and fewer slow end-to-end tests.
  4. Include severity, impact and risk context when interpreting defect metrics.

Explanation

Correct Answer

A:

The targeted action is: Establish a test plan covering scope, approach, resources, risks, schedule and clear completion conditions. It addresses the underlying software-testing principle: A test plan guides and coordinates testing activities and decisions beyond enumerating cases. The relevant confirming evidence is: Stakeholders can judge the test effort and release evidence against an agreed plan.

Incorrect Answers

B:

This choice is a useful response to a different testing situation (section 5.1, Test Planning): A project manager uses a three-point estimate optimistic 2 days, most likely 5 days, pessimistic 11 days, but reports a simple arithmetic mean without stating the chosen formula. The present problem instead depends on: A test plan guides and coordinates testing activities and decisions beyond enumerating cases.

C:

This choice is a useful response to a different testing situation (section 5.1, Test Planning): A delivery platform puts expensive UI automation at the bottom of its testing pyramid and has almost no fast component checks. The present problem instead depends on: A test plan guides and coordinates testing activities and decisions beyond enumerating cases.

D:

This choice is a useful response to a different testing situation (section 5.3, Test Monitoring, Test Control and Test Completion): A team measures 'defects per test case' without distinguishing serious customer failures from small wording issues, then chooses priorities based only on the largest raw count. The present problem instead depends on: A test plan guides and coordinates testing activities and decisions beyond enumerating cases.

Question 726

During a release-readiness review, a tester observes: A testing lead prepares a one-page plan listing only individual test scripts, with no scope, schedule, risks, environment, or completion criteria. Which observation best verifies that the stated testing issue is addressed?

  1. Stakeholders can judge the test effort and release evidence against an agreed plan.
  2. The recorded estimate includes integration risks and clarifies the conditions leading to disagreement.
  3. The suite inventory distinguishes fast component checks from stakeholder acceptance examples.
  4. The team investigates and resolves the mismatch before accepting release criteria.

Explanation

Correct Answer

A:

This is the expected verification outcome: Stakeholders can judge the test effort and release evidence against an agreed plan. It directly checks the corrective activity (Establish a test plan covering scope, approach, resources, risks, schedule and clear completion conditions.) for the described testing problem.

Incorrect Answers

B:

This result may validate another testing scenario: Three experienced testers estimate a migration test effort as 4, 8 and 16 days, and the manager silently selects four days to satisfy a deadline. It does not establish the required result for this case: Stakeholders can judge the test effort and release evidence against an agreed plan.

C:

This result may validate another testing scenario: A company labels a unit test as 'business-facing critique' within its testing quadrant model even though it only checks an isolated calculation function. It does not establish the required result for this case: Stakeholders can judge the test effort and release evidence against an agreed plan.

D:

This result may validate another testing scenario: A test team reports only 'green' after a critical data mismatch emerges but no one updates the plan or triggers investigation. It does not establish the required result for this case: Stakeholders can judge the test effort and release evidence against an agreed plan.

Question 727

During a release-readiness review, a tester observes: A testing lead prepares a one-page plan listing only individual test scripts, with no scope, schedule, risks, environment, or completion criteria. Which testing concept or underlying cause best explains the reported problem?

  1. A test plan guides and coordinates testing activities and decisions beyond enumerating cases.
  2. Test prioritization should consider risk and impact rather than convenience alone.
  3. Risk-based test prioritization supports informed choices when not every planned case can run.
  4. Confirmation testing does not eliminate the need to manage adverse side effects as separate defects.

Explanation

Correct Answer

A:

The most relevant explanation is: A test plan guides and coordinates testing activities and decisions beyond enumerating cases. This describes why the original situation (A testing lead prepares a one-page plan listing only individual test scripts, with no scope, schedule, risks, environment, or completion criteria.) merits the response: Establish a test plan covering scope, approach, resources, risks, schedule and clear completion conditions.

Incorrect Answers

B:

This principle could explain a different testing issue: A new feature has ten low-risk cosmetic tests and three critical authorization tests, but the tester executes the cosmetic tests first because they are shorter. The present case is better explained by: A test plan guides and coordinates testing activities and decisions beyond enumerating cases.

C:

This principle could explain a different testing issue: An online retailer has only one day of test execution left but tries to run the full lower-risk suite before high-priority payment cases because the full suite is easier to schedule. The present case is better explained by: A test plan guides and coordinates testing activities and decisions beyond enumerating cases.

D:

This principle could explain a different testing issue: An integration defect passes retest, but related tests expose a new API schema regression and the manager closes all work as one fixed issue. The present case is better explained by: A test plan guides and coordinates testing activities and decisions beyond enumerating cases.

Question 728

During a release-readiness review, a tester observes: A testing lead prepares a one-page plan listing only individual test scripts, with no scope, schedule, risks, environment, or completion criteria. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Make readiness conditions visible in deployment and test scheduling.
  2. Define defect-related exit controls before testing starts.
  3. Use a test-plan content checklist proportionate to project context.
  4. Trace product risks to relevant test objectives and evidence.

Explanation

Correct Answer

C:

This safeguard specifically targets the contributing cause: Use a test-plan content checklist proportionate to project context. It addresses the principle (A test plan guides and coordinates testing activities and decisions beyond enumerating cases.) and can be assessed by: Stakeholders can judge the test effort and release evidence against an agreed plan.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 5.1): An integration group begins formal testing while the authentication environment is unavailable and a critical database schema is still changing. The targeted safeguard for the current case is: Use a test-plan content checklist proportionate to project context.

B:

This preventive step mitigates a different project risk (syllabus section 5.1): A release planner assumes completion of all planned tests is sufficient for exit, even when two unresolved critical payment defects remain. The targeted safeguard for the current case is: Use a test-plan content checklist proportionate to project context.

D:

This preventive step mitigates a different project risk (syllabus section 5.2): A travel booking release has a high-risk external airline API dependency, but testers execute all lower-level local unit checks and claim the dependency risk is closed. The targeted safeguard for the current case is: Use a test-plan content checklist proportionate to project context.

Question 729

A test analyst investigates the following quality concern: A scrum team schedules a sprint demo while ignoring time to prepare test data and validate the integrated user story. Which testing activity or corrective action best addresses this situation?

  1. Apply agreed entry criteria for a stable build, dependencies, data and environment readiness.
  2. Prioritize high-impact authorization risks before low-impact cosmetic checks under limited time.
  3. Include test analysis, data setup, execution and defect correction work in iteration planning.
  4. Assess product risk using both likelihood and impact, prioritizing high consequences appropriately.

Explanation

Correct Answer

C:

The targeted action is: Include test analysis, data setup, execution and defect correction work in iteration planning. It addresses the underlying software-testing principle: Testers contribute estimates and dependencies to iteration planning, not just the final demonstration. The relevant confirming evidence is: The iteration backlog includes explicit test tasks and the story meets its completion criteria.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 5.1, Test Planning): An integration group begins formal testing while the authentication environment is unavailable and a critical database schema is still changing. The present problem instead depends on: Testers contribute estimates and dependencies to iteration planning, not just the final demonstration.

B:

This choice is a useful response to a different testing situation (section 5.1, Test Planning): A new feature has ten low-risk cosmetic tests and three critical authorization tests, but the tester executes the cosmetic tests first because they are shorter. The present problem instead depends on: Testers contribute estimates and dependencies to iteration planning, not just the final demonstration.

D:

This choice is a useful response to a different testing situation (section 5.2, Risk Management): A payroll platform has a low-likelihood but potentially catastrophic bank-routing defect, yet the team treats it as negligible due to its low incident count. The present problem instead depends on: Testers contribute estimates and dependencies to iteration planning, not just the final demonstration.

Question 730

A test analyst investigates the following quality concern: A scrum team schedules a sprint demo while ignoring time to prepare test data and validate the integrated user story. Which observation best verifies that the stated testing issue is addressed?

  1. The integration estimate accounts for physical setup and external coordination not present in the API work.
  2. The iteration backlog includes explicit test tasks and the story meets its completion criteria.
  3. The short execution window produces relevant payment evidence and transparent residual gaps.
  4. A schema-breaking airline response is caught before a booking is committed.

Explanation

Correct Answer

B:

This is the expected verification outcome: The iteration backlog includes explicit test tasks and the story meets its completion criteria. It directly checks the corrective activity (Include test analysis, data setup, execution and defect correction work in iteration planning.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: A quality lead assumes the same count of test cases means identical effort across a simple API and a complex hardware integration system. It does not establish the required result for this case: The iteration backlog includes explicit test tasks and the story meets its completion criteria.

C:

This result may validate another testing scenario: An online retailer has only one day of test execution left but tries to run the full lower-risk suite before high-priority payment cases because the full suite is easier to schedule. It does not establish the required result for this case: The iteration backlog includes explicit test tasks and the story meets its completion criteria.

D:

This result may validate another testing scenario: A travel booking release has a high-risk external airline API dependency, but testers execute all lower-level local unit checks and claim the dependency risk is closed. It does not establish the required result for this case: The iteration backlog includes explicit test tasks and the story meets its completion criteria.