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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 78

Question 770

A software testing team encounters the following project situation: A release team has 500 end-to-end browser scripts but no fast feedback for a changed calculation function, causing long fault isolation. Which observation best verifies that the stated testing issue is addressed?

  1. The weighted estimate is 5.5 days with its formula and assumptions documented.
  2. The estimate reflects actual completion effort including integration acceptance checks.
  3. The assessment identifies loss-of-payment scenarios and provides a justified ranking.
  4. Calculation defects fail in the fast layer and end-to-end journeys still establish user behavior.

Explanation

Correct Answer

D:

This is the expected verification outcome: Calculation defects fail in the fast layer and end-to-end journeys still establish user behavior. It directly checks the corrective activity (Add focused component checks while retaining essential integrated acceptance tests.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: 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. It does not establish the required result for this case: Calculation defects fail in the fast layer and end-to-end journeys still establish user behavior.

B:

This result may validate another testing scenario: A scrum team estimates one very complex integration story using only development hours, then realizes testing and third-party environment setup consume most of the iteration. It does not establish the required result for this case: Calculation defects fail in the fast layer and end-to-end journeys still establish user behavior.

C:

This result may validate another testing scenario: An online marketplace risk analysis marks 'checkout service may go down' without estimating what conditions could trigger it or how severe the effect would be. It does not establish the required result for this case: Calculation defects fail in the fast layer and end-to-end journeys still establish user behavior.

Question 771

A software testing team encounters the following project situation: A release team has 500 end-to-end browser scripts but no fast feedback for a changed calculation function, causing long fault isolation. Which testing concept or underlying cause best explains the reported problem?

  1. A balanced test pyramid improves diagnostic speed compared with overreliance on expensive UI cases.
  2. Counting cases alone is an unreliable predictor of testing effort across unlike environments.
  3. Entry criteria help determine when an activity can start usefully without avoidable blocked effort.
  4. Counts alone can distort quality and release risk without severity and coverage context.

Explanation

Correct Answer

A:

The most relevant explanation is: A balanced test pyramid improves diagnostic speed compared with overreliance on expensive UI cases. This describes why the original situation (A release team has 500 end-to-end browser scripts but no fast feedback for a changed calculation function, causing long fault isolation.) merits the response: Add focused component checks while retaining essential integrated acceptance tests.

Incorrect Answers

B:

This principle could explain a different testing issue: A quality lead assumes the same count of test cases means identical effort across a simple API and a complex hardware integration system. The present case is better explained by: A balanced test pyramid improves diagnostic speed compared with overreliance on expensive UI cases.

C:

This principle could explain a different testing issue: An integration group begins formal testing while the authentication environment is unavailable and a critical database schema is still changing. The present case is better explained by: A balanced test pyramid improves diagnostic speed compared with overreliance on expensive UI cases.

D:

This principle could explain a different testing issue: 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 case is better explained by: A balanced test pyramid improves diagnostic speed compared with overreliance on expensive UI cases.

Question 772

A software testing team encounters the following project situation: A release team has 500 end-to-end browser scripts but no fast feedback for a changed calculation function, causing long fault isolation. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Map planned checks to quadrants without turning them into stage gates.
  2. Document estimation drivers when expert estimates diverge widely.
  3. Review slow-suite bottlenecks and move suitable checks to lower levels.
  4. Require retest evidence as a defect-closure condition.

Explanation

Correct Answer

C:

This safeguard specifically targets the contributing cause: Review slow-suite bottlenecks and move suitable checks to lower levels. It addresses the principle (A balanced test pyramid improves diagnostic speed compared with overreliance on expensive UI cases.) and can be assessed by: Calculation defects fail in the fast layer and end-to-end journeys still establish user behavior.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 5.1): A tester uses the agile testing quadrants as a strict sequence of four release phases and refuses technical critique until business-facing tests finish. The targeted safeguard for the current case is: Review slow-suite bottlenecks and move suitable checks to lower levels.

B:

This preventive step mitigates a different project risk (syllabus section 5.1): 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. The targeted safeguard for the current case is: Review slow-suite bottlenecks and move suitable checks to lower levels.

D:

This preventive step mitigates a different project risk (syllabus section 5.5): A developer marks a bug fixed after modifying code, but the original failing test was never rerun and the same fault persists in the build. The targeted safeguard for the current case is: Review slow-suite bottlenecks and move suitable checks to lower levels.

Question 773

During a release-readiness review, a tester observes: A migration sponsor requests a release date while the test lead has not identified which services depend on a retired message broker. Which testing activity or corrective action best addresses this situation?

  1. Estimate activity effort using complexity, setup, data and troubleshooting differences rather than raw case counts.
  2. Cross-check expert judgment with historical productivity or structured estimation techniques and assumptions.
  3. Link the result to the exact version of the requirement and expected behavior.
  4. Analyze scope and external dependencies before committing to a confident test schedule.

Explanation

Correct Answer

D:

The targeted action is: Analyze scope and external dependencies before committing to a confident test schedule. It addresses the underlying software-testing principle: Test planning quality relies on identifying relevant test objects, constraints and dependencies early. The relevant confirming evidence is: The schedule records the broker replacement and contract-test readiness as critical dependencies.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 5.1, Test Planning): A quality lead assumes the same count of test cases means identical effort across a simple API and a complex hardware integration system. The present problem instead depends on: Test planning quality relies on identifying relevant test objects, constraints and dependencies early.

B:

This choice is a useful response to a different testing situation (section 5.1, Test Planning): A project estimates 120 test cases based on a single expert opinion but never reviews the result against prior similar releases. The present problem instead depends on: Test planning quality relies on identifying relevant test objects, constraints and dependencies early.

C:

This choice is a useful response to a different testing situation (section 5.4, Configuration Management): A test report references an approved requirement ID but not the revision, even though the requirement changed its threshold between test runs. The present problem instead depends on: Test planning quality relies on identifying relevant test objects, constraints and dependencies early.

Question 774

During a release-readiness review, a tester observes: A migration sponsor requests a release date while the test lead has not identified which services depend on a retired message broker. Which observation best verifies that the stated testing issue is addressed?

  1. Common logic failures are caught quickly while the limited UI suite validates key journeys.
  2. The schedule records the broker replacement and contract-test readiness as critical dependencies.
  3. The iteration backlog includes explicit test tasks and the story meets its completion criteria.
  4. The register assigns distinct mitigations to schedule delay and customer transaction failure.

Explanation

Correct Answer

B:

This is the expected verification outcome: The schedule records the broker replacement and contract-test readiness as critical dependencies. It directly checks the corrective activity (Analyze scope and external dependencies before committing to a confident test schedule.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: A delivery platform puts expensive UI automation at the bottom of its testing pyramid and has almost no fast component checks. It does not establish the required result for this case: The schedule records the broker replacement and contract-test readiness as critical dependencies.

C:

This result may validate another testing scenario: A scrum team schedules a sprint demo while ignoring time to prepare test data and validate the integrated user story. It does not establish the required result for this case: The schedule records the broker replacement and contract-test readiness as critical dependencies.

D:

This result may validate another testing scenario: A team reports delayed test-environment provisioning as a product defect risk in its risk register and prioritizes it as proof users will lose money. It does not establish the required result for this case: The schedule records the broker replacement and contract-test readiness as critical dependencies.

Question 775

During a release-readiness review, a tester observes: A migration sponsor requests a release date while the test lead has not identified which services depend on a retired message broker. Which testing concept or underlying cause best explains the reported problem?

  1. Test planning quality relies on identifying relevant test objects, constraints and dependencies early.
  2. Testers contribute estimates and dependencies to iteration planning, not just the final demonstration.
  3. The test pyramid recommends proportionate layers to balance speed, feedback and confidence.
  4. Risk control requires tests addressing the mechanism of the identified risk, not just any passing tests.

Explanation

Correct Answer

A:

The most relevant explanation is: Test planning quality relies on identifying relevant test objects, constraints and dependencies early. This describes why the original situation (A migration sponsor requests a release date while the test lead has not identified which services depend on a retired message broker.) merits the response: Analyze scope and external dependencies before committing to a confident test schedule.

Incorrect Answers

B:

This principle could explain a different testing issue: A scrum team schedules a sprint demo while ignoring time to prepare test data and validate the integrated user story. The present case is better explained by: Test planning quality relies on identifying relevant test objects, constraints and dependencies early.

C:

This principle could explain a different testing issue: A delivery platform puts expensive UI automation at the bottom of its testing pyramid and has almost no fast component checks. The present case is better explained by: Test planning quality relies on identifying relevant test objects, constraints and dependencies early.

D:

This principle could explain a different testing issue: 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 present case is better explained by: Test planning quality relies on identifying relevant test objects, constraints and dependencies early.

Question 776

During a release-readiness review, a tester observes: A migration sponsor requests a release date while the test lead has not identified which services depend on a retired message broker. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Define defect-related exit controls before testing starts.
  2. Add dependency discovery to initial planning and revisit after architecture changes.
  3. Reassess ordering using product risks and dependencies before execution.
  4. Review affected test cases and scripts with each contract revision.

Explanation

Correct Answer

B:

This safeguard specifically targets the contributing cause: Add dependency discovery to initial planning and revisit after architecture changes. It addresses the principle (Test planning quality relies on identifying relevant test objects, constraints and dependencies early.) and can be assessed by: The schedule records the broker replacement and contract-test readiness as critical dependencies.

Incorrect Answers

A:

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: Add dependency discovery to initial planning and revisit after architecture changes.

C:

This preventive step mitigates a different project risk (syllabus section 5.1): 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 targeted safeguard for the current case is: Add dependency discovery to initial planning and revisit after architecture changes.

D:

This preventive step mitigates a different project risk (syllabus section 5.4): A release candidate has many test suites but nobody tracks which tests were updated after an API contract was changed, so old validations are used in the final report. The targeted safeguard for the current case is: Add dependency discovery to initial planning and revisit after architecture changes.

Question 777

A test analyst investigates the following quality concern: A tester ranks cases solely by customer visibility and leaves a severe hidden data-integrity risk until the final day. Which testing activity or corrective action best addresses this situation?

  1. Evaluate exit conditions including unresolved defect severity and product risk before accepting the release.
  2. Include the likelihood and impact of latent product risks when prioritizing tests.
  3. Reserve time for test closure evidence, data cleanup and retrospective lessons in the test schedule.
  4. Rank the disclosure risk higher given its potential impact and prioritize suitable negative tests.

Explanation

Correct Answer

B:

The targeted action is: Include the likelihood and impact of latent product risks when prioritizing tests. It addresses the underlying software-testing principle: Test priorities should reflect risk rather than only how obvious a feature appears. The relevant confirming evidence is: A data-integrity test runs early despite low user-interface visibility.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 5.1, Test Planning): A release planner assumes completion of all planned tests is sufficient for exit, even when two unresolved critical payment defects remain. The present problem instead depends on: Test priorities should reflect risk rather than only how obvious a feature appears.

C:

This choice is a useful response to a different testing situation (section 5.1, Test Planning): A company finishes implementation early and cancels all planned test completion work, including cleanup and preservation of reusable fixtures. The present problem instead depends on: Test priorities should reflect risk rather than only how obvious a feature appears.

D:

This choice is a useful response to a different testing situation (section 5.2, Risk Management): A compliance portal treats untested login combinations and a public-facing data disclosure flaw as equally important simply because both have one associated test case. The present problem instead depends on: Test priorities should reflect risk rather than only how obvious a feature appears.

Question 778

A test analyst investigates the following quality concern: A tester ranks cases solely by customer visibility and leaves a severe hidden data-integrity risk until the final day. Which observation best verifies that the stated testing issue is addressed?

  1. A data-integrity test runs early despite low user-interface visibility.
  2. Calculation defects fail in the fast layer and end-to-end journeys still establish user behavior.
  3. The estimate reflects actual completion effort including integration acceptance checks.
  4. Risk mitigation includes cross-training without conflating it with functional data tests.

Explanation

Correct Answer

A:

This is the expected verification outcome: A data-integrity test runs early despite low user-interface visibility. It directly checks the corrective activity (Include the likelihood and impact of latent product risks when prioritizing tests.) for the described testing problem.

Incorrect Answers

B:

This result may validate another testing scenario: A release team has 500 end-to-end browser scripts but no fast feedback for a changed calculation function, causing long fault isolation. It does not establish the required result for this case: A data-integrity test runs early despite low user-interface visibility.

C:

This result may validate another testing scenario: A scrum team estimates one very complex integration story using only development hours, then realizes testing and third-party environment setup consume most of the iteration. It does not establish the required result for this case: A data-integrity test runs early despite low user-interface visibility.

D:

This result may validate another testing scenario: An integration project discovers that the only test database administrator is leaving, but the planning team describes this as a direct customer data-corruption defect. It does not establish the required result for this case: A data-integrity test runs early despite low user-interface visibility.

Question 779

A test analyst investigates the following quality concern: A tester ranks cases solely by customer visibility and leaves a severe hidden data-integrity risk until the final day. Which testing concept or underlying cause best explains the reported problem?

  1. Test priorities should reflect risk rather than only how obvious a feature appears.
  2. A balanced test pyramid improves diagnostic speed compared with overreliance on expensive UI cases.
  3. Whole-team iteration estimates need account for testing activities and supporting work.
  4. Risk identification and control must be revisited as the product and context evolve.

Explanation

Correct Answer

A:

The most relevant explanation is: Test priorities should reflect risk rather than only how obvious a feature appears. This describes why the original situation (A tester ranks cases solely by customer visibility and leaves a severe hidden data-integrity risk until the final day.) merits the response: Include the likelihood and impact of latent product risks when prioritizing tests.

Incorrect Answers

B:

This principle could explain a different testing issue: A release team has 500 end-to-end browser scripts but no fast feedback for a changed calculation function, causing long fault isolation. The present case is better explained by: Test priorities should reflect risk rather than only how obvious a feature appears.

C:

This principle could explain a different testing issue: A scrum team estimates one very complex integration story using only development hours, then realizes testing and third-party environment setup consume most of the iteration. The present case is better explained by: Test priorities should reflect risk rather than only how obvious a feature appears.

D:

This principle could explain a different testing issue: A feature has been redesigned, but the risk register still describes its old external billing interface and no one reviews the stale mitigation plan. The present case is better explained by: Test priorities should reflect risk rather than only how obvious a feature appears.

Question 780

A test analyst investigates the following quality concern: A tester ranks cases solely by customer visibility and leaves a severe hidden data-integrity risk until the final day. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Reassess ordering using product risks and dependencies before execution.
  2. Review the test suite's execution cost, flakiness and level distribution.
  3. Use product-risk assessments to select early tests and confirm priorities with stakeholders.
  4. Define threshold-based escalation and reporting schedules with stakeholders.

Explanation

Correct Answer

C:

This safeguard specifically targets the contributing cause: Use product-risk assessments to select early tests and confirm priorities with stakeholders. It addresses the principle (Test priorities should reflect risk rather than only how obvious a feature appears.) and can be assessed by: A data-integrity test runs early despite low user-interface visibility.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 5.1): 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 targeted safeguard for the current case is: Use product-risk assessments to select early tests and confirm priorities with stakeholders.

B:

This preventive step mitigates a different project risk (syllabus section 5.1): A delivery platform puts expensive UI automation at the bottom of its testing pyramid and has almost no fast component checks. The targeted safeguard for the current case is: Use product-risk assessments to select early tests and confirm priorities with stakeholders.

D:

This preventive step mitigates a different project risk (syllabus section 5.3): A tester sends all defect details in a single long daily status email while operations needs an immediate signal when payment failures exceed an agreed threshold. The targeted safeguard for the current case is: Use product-risk assessments to select early tests and confirm priorities with stakeholders.