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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 93

Question 920

During a release-readiness review, a tester observes: A mobile app tester files a defect with title 'does not work', no expected outcome, and no steps, preventing a developer from reproducing it. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Provide defect triage guidelines with explicit severity and priority dimensions.
  2. Include test-data and expected-result references in numerical defect reports.
  3. Require structured reproducibility and actual-versus-expected data in issue templates.
  4. State metric formulas and include status categories consistently.

Explanation

Correct Answer

C:

This safeguard specifically targets the contributing cause: Require structured reproducibility and actual-versus-expected data in issue templates. It addresses the principle (Defect reports must communicate enough information to analyze and resolve an issue.) and can be assessed by: Another engineer reproduces the crash in the stated build and can investigate it.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 5.5): A critical data-loss defect is logged as lowest priority because the feature is used rarely, with no assessment of potential business harm. The targeted safeguard for the current case is: Require structured reproducibility and actual-versus-expected data in issue templates.

B:

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: Require structured reproducibility and actual-versus-expected data in issue templates.

D:

This preventive step mitigates a different project risk (syllabus section 5.3): A release dashboard says 95% of tests passed but excludes 40 blocked cases, leading leadership to believe almost all required behavior is validated. The targeted safeguard for the current case is: Require structured reproducibility and actual-versus-expected data in issue templates.

Question 921

A test analyst investigates the following quality concern: 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. Which testing activity or corrective action best addresses this situation?

  1. Correlate reproducible symptoms and build context before merging or linking related defect reports.
  2. Record attempted reproduction conditions and request additional evidence before assigning a final disposition.
  3. Attach the relevant input and calculation oracle with the screenshot and product revision.
  4. Rebalance towards many fast focused component tests, fewer integration tests and fewer slow end-to-end tests.

Explanation

Correct Answer

C:

The targeted action is: Attach the relevant input and calculation oracle with the screenshot and product revision. It addresses the underlying software-testing principle: Visual evidence alone may not explain why observed behavior violates an expected rule. The relevant confirming evidence is: A developer reproduces the exact incorrect total from the defect report.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 5.5, Defect Management): A support engineer creates duplicate tickets for one crash that occurs under multiple user accounts, consuming triage time and hiding its shared root condition. The present problem instead depends on: Visual evidence alone may not explain why observed behavior violates an expected rule.

B:

This choice is a useful response to a different testing situation (section 5.5, Defect Management): A team closes a reported failure as 'cannot reproduce' without documenting tested conditions or asking the reporter for missing details. The present problem instead depends on: Visual evidence alone may not explain why observed behavior violates an expected rule.

D:

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: Visual evidence alone may not explain why observed behavior violates an expected rule.

Question 922

A test analyst investigates the following quality concern: 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. Which observation best verifies that the stated testing issue is addressed?

  1. The issue receives a severity assessment that reflects possible irreversible data loss.
  2. A developer reproduces the exact incorrect total from the defect report.
  3. One primary defect tracks the shared crash with separate supporting reproductions.
  4. The report distinguishes scanned paths from untested privileged functions and records remaining exposure.

Explanation

Correct Answer

B:

This is the expected verification outcome: A developer reproduces the exact incorrect total from the defect report. It directly checks the corrective activity (Attach the relevant input and calculation oracle with the screenshot and product revision.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: A critical data-loss defect is logged as lowest priority because the feature is used rarely, with no assessment of potential business harm. It does not establish the required result for this case: A developer reproduces the exact incorrect total from the defect report.

C:

This result may validate another testing scenario: A support engineer creates duplicate tickets for one crash that occurs under multiple user accounts, consuming triage time and hiding its shared root condition. It does not establish the required result for this case: A developer reproduces the exact incorrect total from the defect report.

D:

This result may validate another testing scenario: 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. It does not establish the required result for this case: A developer reproduces the exact incorrect total from the defect report.

Question 923

A test analyst investigates the following quality concern: 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. Which testing concept or underlying cause best explains the reported problem?

  1. Defect transparency supports informed quality and risk decisions across team boundaries.
  2. Confirmation testing does not eliminate the need to manage adverse side effects as separate defects.
  3. Visual evidence alone may not explain why observed behavior violates an expected rule.
  4. Whole-team iteration estimates need account for testing activities and supporting work.

Explanation

Correct Answer

C:

The most relevant explanation is: Visual evidence alone may not explain why observed behavior violates an expected rule. This describes why the original situation (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.) merits the response: Attach the relevant input and calculation oracle with the screenshot and product revision.

Incorrect Answers

A:

This principle could explain a different testing issue: A release board considers a known authorization bypass as an open defect but the test lead hides it from the completion report because it is assigned to another department. The present case is better explained by: Visual evidence alone may not explain why observed behavior violates an expected rule.

B:

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: Visual evidence alone may not explain why observed behavior violates an expected rule.

D:

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: Visual evidence alone may not explain why observed behavior violates an expected rule.

Question 924

A test analyst investigates the following quality concern: 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. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Require retest evidence as a defect-closure condition.
  2. Review similar symptoms and shared reproduction signatures during triage.
  3. Test meaningful abuse paths before reducing product risk levels.
  4. Include test-data and expected-result references in numerical defect reports.

Explanation

Correct Answer

D:

This safeguard specifically targets the contributing cause: Include test-data and expected-result references in numerical defect reports. It addresses the principle (Visual evidence alone may not explain why observed behavior violates an expected rule.) and can be assessed by: A developer reproduces the exact incorrect total from the defect report.

Incorrect Answers

A:

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: Include test-data and expected-result references in numerical defect reports.

B:

This preventive step mitigates a different project risk (syllabus section 5.5): A support engineer creates duplicate tickets for one crash that occurs under multiple user accounts, consuming triage time and hiding its shared root condition. The targeted safeguard for the current case is: Include test-data and expected-result references in numerical defect reports.

C:

This preventive step mitigates a different project risk (syllabus section 5.2): 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 targeted safeguard for the current case is: Include test-data and expected-result references in numerical defect reports.

Question 925

In a fictional application-delivery project, the team reports: A critical data-loss defect is logged as lowest priority because the feature is used rarely, with no assessment of potential business harm. Which testing activity or corrective action best addresses this situation?

  1. Correlate reproducible symptoms and build context before merging or linking related defect reports.
  2. Perform confirmation testing on the exact failure using the corrected build before closure.
  3. Summarize execution, coverage, unresolved risks, deviations and conclusions against planned completion criteria.
  4. Separate defect severity from scheduling priority and assess both frequency and consequence.

Explanation

Correct Answer

D:

The targeted action is: Separate defect severity from scheduling priority and assess both frequency and consequence. It addresses the underlying software-testing principle: Severity expresses impact of a defect while priority describes urgency of its resolution. The relevant confirming evidence is: The issue receives a severity assessment that reflects possible irreversible data loss.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 5.5, Defect Management): A support engineer creates duplicate tickets for one crash that occurs under multiple user accounts, consuming triage time and hiding its shared root condition. The present problem instead depends on: Severity expresses impact of a defect while priority describes urgency of its resolution.

B:

This choice is a useful response to a different testing situation (section 5.5, Defect Management): 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 present problem instead depends on: Severity expresses impact of a defect while priority describes urgency of its resolution.

C:

This choice is a useful response to a different testing situation (section 5.3, Test Monitoring, Test Control and Test Completion): A QA lead prepares a completion report that says 'testing finished' but lacks unresolved defects, coverage, achieved objectives and environment caveats. The present problem instead depends on: Severity expresses impact of a defect while priority describes urgency of its resolution.

Question 926

In a fictional application-delivery project, the team reports: A critical data-loss defect is logged as lowest priority because the feature is used rarely, with no assessment of potential business harm. Which observation best verifies that the stated testing issue is addressed?

  1. The issue history distinguishes the corrected failure from a newly introduced incompatible API response.
  2. The issue receives a severity assessment that reflects possible irreversible data loss.
  3. The status explains which versions and inputs were tried and whether the issue needs more information.
  4. Common logic failures are caught quickly while the limited UI suite validates key journeys.

Explanation

Correct Answer

B:

This is the expected verification outcome: The issue receives a severity assessment that reflects possible irreversible data loss. It directly checks the corrective activity (Separate defect severity from scheduling priority and assess both frequency and consequence.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: An integration defect passes retest, but related tests expose a new API schema regression and the manager closes all work as one fixed issue. It does not establish the required result for this case: The issue receives a severity assessment that reflects possible irreversible data loss.

C:

This result may validate another testing scenario: A team closes a reported failure as 'cannot reproduce' without documenting tested conditions or asking the reporter for missing details. It does not establish the required result for this case: The issue receives a severity assessment that reflects possible irreversible data loss.

D:

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 issue receives a severity assessment that reflects possible irreversible data loss.

Question 927

In a fictional application-delivery project, the team reports: A critical data-loss defect is logged as lowest priority because the feature is used rarely, with no assessment of potential business harm. Which testing concept or underlying cause best explains the reported problem?

  1. Fix implementation and confirmation testing are distinct defect lifecycle steps.
  2. Defect management benefits from controlled duplicate handling while retaining evidence of affected scenarios.
  3. Severity expresses impact of a defect while priority describes urgency of its resolution.
  4. Test prioritization should consider risk and impact rather than convenience alone.

Explanation

Correct Answer

C:

The most relevant explanation is: Severity expresses impact of a defect while priority describes urgency of its resolution. This describes why the original situation (A critical data-loss defect is logged as lowest priority because the feature is used rarely, with no assessment of potential business harm.) merits the response: Separate defect severity from scheduling priority and assess both frequency and consequence.

Incorrect Answers

A:

This principle could explain a different testing issue: 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 present case is better explained by: Severity expresses impact of a defect while priority describes urgency of its resolution.

B:

This principle could explain a different testing issue: A support engineer creates duplicate tickets for one crash that occurs under multiple user accounts, consuming triage time and hiding its shared root condition. The present case is better explained by: Severity expresses impact of a defect while priority describes urgency of its resolution.

D:

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: Severity expresses impact of a defect while priority describes urgency of its resolution.

Question 928

In a fictional application-delivery project, the team reports: A critical data-loss defect is logged as lowest priority because the feature is used rarely, with no assessment of potential business harm. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Require structured reproducibility and actual-versus-expected data in issue templates.
  2. Reconcile release reports with the current defect register independently of ownership.
  3. Pair quantity metrics with risk and impact classification.
  4. Provide defect triage guidelines with explicit severity and priority dimensions.

Explanation

Correct Answer

D:

This safeguard specifically targets the contributing cause: Provide defect triage guidelines with explicit severity and priority dimensions. It addresses the principle (Severity expresses impact of a defect while priority describes urgency of its resolution.) and can be assessed by: The issue receives a severity assessment that reflects possible irreversible data loss.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 5.5): A mobile app tester files a defect with title 'does not work', no expected outcome, and no steps, preventing a developer from reproducing it. The targeted safeguard for the current case is: Provide defect triage guidelines with explicit severity and priority dimensions.

B:

This preventive step mitigates a different project risk (syllabus section 5.5): A release board considers a known authorization bypass as an open defect but the test lead hides it from the completion report because it is assigned to another department. The targeted safeguard for the current case is: Provide defect triage guidelines with explicit severity and priority dimensions.

C:

This preventive step mitigates a different project risk (syllabus section 5.3): 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 targeted safeguard for the current case is: Provide defect triage guidelines with explicit severity and priority dimensions.

Question 929

A tester is asked to evaluate the following situation: 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. Which testing activity or corrective action best addresses this situation?

  1. Perform confirmation testing on the exact failure using the corrected build before closure.
  2. Close the confirmed original defect separately while logging and investigating the newly observed regression.
  3. Attach the relevant input and calculation oracle with the screenshot and product revision.
  4. Normalize defect observations against executed scope and coverage before interpreting the trend.

Explanation

Correct Answer

A:

The targeted action is: Perform confirmation testing on the exact failure using the corrected build before closure. It addresses the underlying software-testing principle: Fix implementation and confirmation testing are distinct defect lifecycle steps. The relevant confirming evidence is: The previous reproduction now passes and the defect record references its retest result.

Incorrect Answers

B:

This choice is a useful response to a different testing situation (section 5.5, Defect Management): 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 problem instead depends on: Fix implementation and confirmation testing are distinct defect lifecycle steps.

C:

This choice is a useful response to a different testing situation (section 5.5, Defect Management): 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 present problem instead depends on: Fix implementation and confirmation testing are distinct defect lifecycle steps.

D:

This choice is a useful response to a different testing situation (section 5.3, Test Monitoring, Test Control and Test Completion): A testing team claims a 30% fall in defect counts means the current release is safer, although half the planned tests were deferred. The present problem instead depends on: Fix implementation and confirmation testing are distinct defect lifecycle steps.

Question 930

A tester is asked to evaluate the following situation: 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. Which observation best verifies that the stated testing issue is addressed?

  1. The status explains which versions and inputs were tried and whether the issue needs more information.
  2. The previous reproduction now passes and the defect record references its retest result.
  3. Another engineer reproduces the crash in the stated build and can investigate it.
  4. The report distinguishes scanned paths from untested privileged functions and records remaining exposure.

Explanation

Correct Answer

B:

This is the expected verification outcome: The previous reproduction now passes and the defect record references its retest result. It directly checks the corrective activity (Perform confirmation testing on the exact failure using the corrected build before closure.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: A team closes a reported failure as 'cannot reproduce' without documenting tested conditions or asking the reporter for missing details. It does not establish the required result for this case: The previous reproduction now passes and the defect record references its retest result.

C:

This result may validate another testing scenario: A mobile app tester files a defect with title 'does not work', no expected outcome, and no steps, preventing a developer from reproducing it. It does not establish the required result for this case: The previous reproduction now passes and the defect record references its retest result.

D:

This result may validate another testing scenario: 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. It does not establish the required result for this case: The previous reproduction now passes and the defect record references its retest result.