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Exam Code: CTFL v4.0

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

Certification Provider: ISTQB

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ISTQB CTFL v4.0 Practice Test 84

Question 830

In a fictional application-delivery project, the team reports: 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. Which observation best verifies that the stated testing issue is addressed?

  1. Load tests determine whether throughput stays within agreed thresholds or requires corrective work.
  2. Risk mitigation includes cross-training without conflating it with functional data tests.
  3. A schema-breaking airline response is caught before a booking is committed.
  4. The team performs supporting checks and critical evaluations throughout the iteration as needed.

Explanation

Correct Answer

C:

This is the expected verification outcome: A schema-breaking airline response is caught before a booking is committed. It directly checks the corrective activity (Design integration failure and compatibility tests for the real dependency behavior.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: A system's performance risk is rated high, but the only planned action is to add a warning to the release notes without measuring capacity. It does not establish the required result for this case: A schema-breaking airline response is caught before a booking is committed.

B:

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 schema-breaking airline response is caught before a booking is committed.

D:

This result may validate another testing scenario: A tester uses the agile testing quadrants as a strict sequence of four release phases and refuses technical critique until business-facing tests finish. It does not establish the required result for this case: A schema-breaking airline response is caught before a booking is committed.

Question 831

In a fictional application-delivery project, the team reports: 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. Which testing concept or underlying cause best explains the reported problem?

  1. Risk level reflects probability and impact rather than frequency alone.
  2. A control's apparent coverage at one interface does not imply the product risk is mitigated across all paths.
  3. Risk control requires tests addressing the mechanism of the identified risk, not just any passing tests.
  4. Test planning quality relies on identifying relevant test objects, constraints and dependencies early.

Explanation

Correct Answer

C:

The most relevant explanation is: Risk control requires tests addressing the mechanism of the identified risk, not just any passing tests. This describes why the original situation (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.) merits the response: Design integration failure and compatibility tests for the real dependency behavior.

Incorrect Answers

A:

This principle could explain a different testing issue: 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 case is better explained by: Risk control requires tests addressing the mechanism of the identified risk, not just any passing tests.

B:

This principle could explain a different testing issue: A website implements a strong password rule but has no tests for server-side bypass through a direct API call; leadership accepts a low risk score based on UI checks. The present case is better explained by: Risk control requires tests addressing the mechanism of the identified risk, not just any passing tests.

D:

This principle could explain a different testing issue: A migration sponsor requests a release date while the test lead has not identified which services depend on a retired message broker. The present case is better explained by: Risk control requires tests addressing the mechanism of the identified risk, not just any passing tests.

Question 832

In a fictional application-delivery project, the team reports: 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. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Reassess severe outcomes even when historical incidents are rare.
  2. Trace product risks to relevant test objectives and evidence.
  3. Relate priority decisions to impact and likelihood, not inventory size.
  4. Record complexity and environment drivers in estimation baselines.

Explanation

Correct Answer

B:

This safeguard specifically targets the contributing cause: Trace product risks to relevant test objectives and evidence. It addresses the principle (Risk control requires tests addressing the mechanism of the identified risk, not just any passing tests.) and can be assessed by: A schema-breaking airline response is caught before a booking is committed.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 5.2): 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 targeted safeguard for the current case is: Trace product risks to relevant test objectives and evidence.

C:

This preventive step mitigates a different project risk (syllabus section 5.2): 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 targeted safeguard for the current case is: Trace product risks to relevant test objectives and evidence.

D:

This preventive step mitigates a different project risk (syllabus section 5.1): A quality lead assumes the same count of test cases means identical effort across a simple API and a complex hardware integration system. The targeted safeguard for the current case is: Trace product risks to relevant test objectives and evidence.

Question 833

A tester is asked to evaluate the following situation: A manager insists all risks with the same likelihood score deserve identical test effort even though one affects only a minor label and the other affects patient safety. Which testing activity or corrective action best addresses this situation?

  1. Rank the disclosure risk higher given its potential impact and prioritize suitable negative tests.
  2. Classify provisioning delay as a project risk and analyze software payment defects separately as product risks.
  3. Compare severity of potential effects and adjust test attention accordingly.
  4. Report executed, passed, failed and blocked test counts with the full planned denominator.

Explanation

Correct Answer

C:

The targeted action is: Compare severity of potential effects and adjust test attention accordingly. It addresses the underlying software-testing principle: Risk magnitude depends on impact as well as likelihood and may warrant different controls. The relevant confirming evidence is: Patient-safety behaviors receive stronger validation than low-impact presentation details.

Incorrect Answers

A:

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: Risk magnitude depends on impact as well as likelihood and may warrant different controls.

B:

This choice is a useful response to a different testing situation (section 5.2, Risk Management): 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. The present problem instead depends on: Risk magnitude depends on impact as well as likelihood and may warrant different controls.

D:

This choice is a useful response to a different testing situation (section 5.3, Test Monitoring, Test Control and Test Completion): A release dashboard says 95% of tests passed but excludes 40 blocked cases, leading leadership to believe almost all required behavior is validated. The present problem instead depends on: Risk magnitude depends on impact as well as likelihood and may warrant different controls.

Question 834

A tester is asked to evaluate the following situation: A manager insists all risks with the same likelihood score deserve identical test effort even though one affects only a minor label and the other affects patient safety. Which observation best verifies that the stated testing issue is addressed?

  1. Patient-safety behaviors receive stronger validation than low-impact presentation details.
  2. The updated risk score reflects operational downtime and leads to planned recovery tests.
  3. The release plan directs early testing to unauthorized data access while documenting the other gap.
  4. The iteration backlog includes explicit test tasks and the story meets its completion criteria.

Explanation

Correct Answer

A:

This is the expected verification outcome: Patient-safety behaviors receive stronger validation than low-impact presentation details. It directly checks the corrective activity (Compare severity of potential effects and adjust test attention accordingly.) for the described testing problem.

Incorrect Answers

B:

This result may validate another testing scenario: A network appliance team assigns a numerical risk score without stakeholder input, underestimating the operational impact of service interruption during critical maintenance. It does not establish the required result for this case: Patient-safety behaviors receive stronger validation than low-impact presentation details.

C:

This result may validate another testing scenario: 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. It does not establish the required result for this case: Patient-safety behaviors receive stronger validation than low-impact presentation details.

D:

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: Patient-safety behaviors receive stronger validation than low-impact presentation details.

Question 835

A tester is asked to evaluate the following situation: A manager insists all risks with the same likelihood score deserve identical test effort even though one affects only a minor label and the other affects patient safety. Which testing concept or underlying cause best explains the reported problem?

  1. A control's apparent coverage at one interface does not imply the product risk is mitigated across all paths.
  2. Risk magnitude depends on impact as well as likelihood and may warrant different controls.
  3. Test case count does not measure risk severity or mitigation priority.
  4. Entry criteria help determine when an activity can start usefully without avoidable blocked effort.

Explanation

Correct Answer

B:

The most relevant explanation is: Risk magnitude depends on impact as well as likelihood and may warrant different controls. This describes why the original situation (A manager insists all risks with the same likelihood score deserve identical test effort even though one affects only a minor label and the other affects patient safety.) merits the response: Compare severity of potential effects and adjust test attention accordingly.

Incorrect Answers

A:

This principle could explain a different testing issue: A website implements a strong password rule but has no tests for server-side bypass through a direct API call; leadership accepts a low risk score based on UI checks. The present case is better explained by: Risk magnitude depends on impact as well as likelihood and may warrant different controls.

C:

This principle could explain a different testing issue: 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 case is better explained by: Risk magnitude depends on impact as well as likelihood and may warrant different controls.

D:

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: Risk magnitude depends on impact as well as likelihood and may warrant different controls.

Question 836

A tester is asked to evaluate the following situation: A manager insists all risks with the same likelihood score deserve identical test effort even though one affects only a minor label and the other affects patient safety. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Require scope and limitations with risk-control evidence.
  2. Review risk priority with clinical stakeholders before allocating test effort.
  3. Use a risk matrix that incorporates consequence severity.
  4. Include test-data and expected-result references in numerical defect reports.

Explanation

Correct Answer

C:

This safeguard specifically targets the contributing cause: Use a risk matrix that incorporates consequence severity. It addresses the principle (Risk magnitude depends on impact as well as likelihood and may warrant different controls.) and can be assessed by: Patient-safety behaviors receive stronger validation than low-impact presentation details.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 5.2): A team runs a penetration scanner and marks all identified security risks eliminated because the tool reported no findings, though its scan excluded authenticated endpoints. The targeted safeguard for the current case is: Use a risk matrix that incorporates consequence severity.

B:

This preventive step mitigates a different project risk (syllabus section 5.2): A medical booking application has high impact if emergency appointments are lost, and testers choose random low-priority features for their first execution batch. The targeted safeguard for the current case is: Use a risk matrix that incorporates consequence severity.

D:

This preventive step mitigates a different project risk (syllabus section 5.5): A reporting test detects an incorrect decimal total, but the defect tracker records only a UI screenshot without the input data or rule being applied. The targeted safeguard for the current case is: Use a risk matrix that incorporates consequence severity.

Question 837

A quality engineering exercise presents this condition: A feature has been redesigned, but the risk register still describes its old external billing interface and no one reviews the stale mitigation plan. Which testing activity or corrective action best addresses this situation?

  1. Refine the risk with plausible failure causes, probability evidence and customer-impact estimate.
  2. Treat staffing availability as a project delivery risk while separately assessing data integrity failure as a product risk.
  3. Re-evaluate risk assumptions and update tests for the new architecture and integration points.
  4. Estimate activity effort using complexity, setup, data and troubleshooting differences rather than raw case counts.

Explanation

Correct Answer

C:

The targeted action is: Re-evaluate risk assumptions and update tests for the new architecture and integration points. It addresses the underlying software-testing principle: Risk identification and control must be revisited as the product and context evolve. The relevant confirming evidence is: Current risks and their owners align with the revised design and coverage.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 5.2, Risk Management): 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. The present problem instead depends on: Risk identification and control must be revisited as the product and context evolve.

B:

This choice is a useful response to a different testing situation (section 5.2, Risk Management): 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. The present problem instead depends on: Risk identification and control must be revisited as the product and context evolve.

D:

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: Risk identification and control must be revisited as the product and context evolve.

Question 838

A quality engineering exercise presents this condition: A feature has been redesigned, but the risk register still describes its old external billing interface and no one reviews the stale mitigation plan. Which observation best verifies that the stated testing issue is addressed?

  1. The register assigns distinct mitigations to schedule delay and customer transaction failure.
  2. Patient-safety behaviors receive stronger validation than low-impact presentation details.
  3. The short execution window produces relevant payment evidence and transparent residual gaps.
  4. Current risks and their owners align with the revised design and coverage.

Explanation

Correct Answer

D:

This is the expected verification outcome: Current risks and their owners align with the revised design and coverage. It directly checks the corrective activity (Re-evaluate risk assumptions and update tests for the new architecture and integration points.) for the described testing problem.

Incorrect Answers

A:

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: Current risks and their owners align with the revised design and coverage.

B:

This result may validate another testing scenario: A manager insists all risks with the same likelihood score deserve identical test effort even though one affects only a minor label and the other affects patient safety. It does not establish the required result for this case: Current risks and their owners align with the revised design and coverage.

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: Current risks and their owners align with the revised design and coverage.

Question 839

A quality engineering exercise presents this condition: A feature has been redesigned, but the risk register still describes its old external billing interface and no one reviews the stale mitigation plan. Which testing concept or underlying cause best explains the reported problem?

  1. Risk identification and control must be revisited as the product and context evolve.
  2. Product risk control includes risk mitigation, monitoring and appropriate test actions rather than a label.
  3. Product risk analysis examines likelihood and impact using relevant information, not a label alone.
  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: Risk identification and control must be revisited as the product and context evolve. This describes why the original situation (A feature has been redesigned, but the risk register still describes its old external billing interface and no one reviews the stale mitigation plan.) merits the response: Re-evaluate risk assumptions and update tests for the new architecture and integration points.

Incorrect Answers

B:

This principle could explain a different testing issue: A system's performance risk is rated high, but the only planned action is to add a warning to the release notes without measuring capacity. The present case is better explained by: Risk identification and control must be revisited as the product and context evolve.

C:

This principle could explain a different testing issue: 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. The present case is better explained by: Risk identification and control must be revisited as the product and context evolve.

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: Risk identification and control must be revisited as the product and context evolve.

Question 840

A quality engineering exercise presents this condition: A feature has been redesigned, but the risk register still describes its old external billing interface and no one reviews the stale mitigation plan. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Include risk review in change control for architectural redesigns.
  2. Review risk priority with clinical stakeholders before allocating test effort.
  3. Trace product risks to relevant test objectives and evidence.
  4. Define time-critical priority ordering during test planning, not after time runs out.

Explanation

Correct Answer

A:

This safeguard specifically targets the contributing cause: Include risk review in change control for architectural redesigns. It addresses the principle (Risk identification and control must be revisited as the product and context evolve.) and can be assessed by: Current risks and their owners align with the revised design and coverage.

Incorrect Answers

B:

This preventive step mitigates a different project risk (syllabus section 5.2): A medical booking application has high impact if emergency appointments are lost, and testers choose random low-priority features for their first execution batch. The targeted safeguard for the current case is: Include risk review in change control for architectural redesigns.

C:

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: Include risk review in change control for architectural redesigns.

D:

This preventive step mitigates a different project risk (syllabus section 5.1): 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 targeted safeguard for the current case is: Include risk review in change control for architectural redesigns.