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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 71

Question 700

A software testing team encounters the following project situation: An ATM team specifies 'if PIN invalid then reject' but never specifies what happens after three consecutive failures, leaving an account-lockout security gap. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Review examples for both qualifying and nonqualifying business cases.
  2. Check temporal phrases such as 'within' and 'at least' during acceptance example review.
  3. Select a condition-combination technique when business logic uses multiple predicates.
  4. Include repeated-event and state-change examples in acceptance planning.

Explanation

Correct Answer

D:

This safeguard specifically targets the contributing cause: Include repeated-event and state-change examples in acceptance planning. It addresses the principle (Examples and criteria help uncover state-dependent behavior missing from simple rules.) and can be assessed by: Three failures lock the account as agreed, while a permitted reset follows the authorized recovery path.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 4.5): An e-commerce story has one acceptance sentence, 'the discount works', and the tester cannot determine which customer segments qualify. The targeted safeguard for the current case is: Include repeated-event and state-change examples in acceptance planning.

B:

This preventive step mitigates a different project risk (syllabus section 4.5): A flight booking story says refunds must complete within seven days, but a test expects exactly seven days instead of verifying the maximum permitted time. The targeted safeguard for the current case is: Include repeated-event and state-change examples in acceptance planning.

C:

This preventive step mitigates a different project risk (syllabus section 4.2): A travel claim uses conditions 'flight cancelled' and 'replacement provided', with compensation depending on their combination; the tester groups all cancellation cases into one partition. The targeted safeguard for the current case is: Include repeated-event and state-change examples in acceptance planning.

Question 701

During a release-readiness review, a tester observes: A project runs ATDD meetings after delivery and labels the production demo as the first moment stakeholders can define expected outcomes. Which testing activity or corrective action best addresses this situation?

  1. Rewrite criteria around observable invoice and ledger outcomes while separately testing internal implementation where useful.
  2. Add acceptance examples covering competing requests and the expected atomic booking outcome.
  3. Include 0, 1, 2 and 5, 6, 7 around both boundaries when using three-value BVA.
  4. Move shared acceptance example creation to refinement before coding begins.

Explanation

Correct Answer

D:

The targeted action is: Move shared acceptance example creation to refinement before coding begins. It addresses the underlying software-testing principle: ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking. The relevant confirming evidence is: Developers implement against agreed examples and stakeholders verify the final result.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 4.5, Collaboration-based Test Approaches): 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 present problem instead depends on: ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking.

B:

This choice is a useful response to a different testing situation (section 4.5, Collaboration-based Test Approaches): A restaurant app story describes table booking but omits what happens if two customers reserve the last table simultaneously. The present problem instead depends on: ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking.

C:

This choice is a useful response to a different testing situation (section 4.2, Black-Box Test Techniques): A booking API allows 1–6 passengers, and a developer asserts that 1, 3, 6, and 7 prove three-value boundary coverage. The present problem instead depends on: ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking.

Question 702

During a release-readiness review, a tester observes: A project runs ATDD meetings after delivery and labels the production demo as the first moment stakeholders can define expected outcomes. Which observation best verifies that the stated testing issue is addressed?

  1. The resulting acceptance rules distinguish valid, partial and rejected imports.
  2. Developers implement against agreed examples and stakeholders verify the final result.
  3. A seeded wrong price causes the appropriate acceptance scenario to fail before correction.
  4. A fourth combination exposes a fault even though each individual decision outcome had already run.

Explanation

Correct Answer

B:

This is the expected verification outcome: Developers implement against agreed examples and stakeholders verify the final result. It directly checks the corrective activity (Move shared acceptance example creation to refinement before coding begins.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: A user story describes bulk invoice import, but team members propose dozens of unrelated implementation details instead of discussing concrete user outcomes. It does not establish the required result for this case: Developers implement against agreed examples and stakeholders verify the final result.

C:

This result may validate another testing scenario: A service team automates its Gherkin scenarios with step definitions that always return success regardless of the application's actual state. It does not establish the required result for this case: Developers implement against agreed examples and stakeholders verify the final result.

D:

This result may validate another testing scenario: A team assumes 100% branch coverage ensures every possible execution path through two independent decisions is covered. It does not establish the required result for this case: Developers implement against agreed examples and stakeholders verify the final result.

Question 703

During a release-readiness review, a tester observes: A project runs ATDD meetings after delivery and labels the production demo as the first moment stakeholders can define expected outcomes. Which testing concept or underlying cause best explains the reported problem?

  1. Acceptance test-driven development uses shared examples before coding to guide product behavior.
  2. Collaborative examples expose edge cases overlooked by a broad user story.
  3. Negative transition testing reveals violations of rules that forbid events from terminal states.
  4. ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking.

Explanation

Correct Answer

D:

The most relevant explanation is: ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking. This describes why the original situation (A project runs ATDD meetings after delivery and labels the production demo as the first moment stakeholders can define expected outcomes.) merits the response: Move shared acceptance example creation to refinement before coding begins.

Incorrect Answers

A:

This principle could explain a different testing issue: An agile team writes Given-When-Then scenarios only after coding, so the examples merely reproduce existing behavior rather than the intended business rule. The present case is better explained by: ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking.

B:

This principle could explain a different testing issue: A restaurant app story describes table booking but omits what happens if two customers reserve the last table simultaneously. The present case is better explained by: ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking.

C:

This principle could explain a different testing issue: A loyalty engine has an 'expired' terminal status but the QA suite never tests attempts to redeem a reward after expiration. The present case is better explained by: ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking.

Question 704

During a release-readiness review, a tester observes: A project runs ATDD meetings after delivery and labels the production demo as the first moment stakeholders can define expected outcomes. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Run periodic mutation or intentional-failure checks against ATDD step definitions.
  2. Schedule discovery workshops before work starts on complex stories.
  3. Include unauthorized and prohibited outcome examples in high-impact ATDD suites.
  4. Review checklists with product owners after significant capability changes.

Explanation

Correct Answer

B:

This safeguard specifically targets the contributing cause: Schedule discovery workshops before work starts on complex stories. It addresses the principle (ATDD aims to clarify expectations early through collaboration and test-first acceptance thinking.) and can be assessed by: Developers implement against agreed examples and stakeholders verify the final result.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 4.5): A service team automates its Gherkin scenarios with step definitions that always return success regardless of the application's actual state. The targeted safeguard for the current case is: Schedule discovery workshops before work starts on complex stories.

C:

This preventive step mitigates a different project risk (syllabus section 4.5): A claims workflow has a formal acceptance criterion that approved claims may be paid, but no scenario ensures a rejected claim cannot trigger payment. The targeted safeguard for the current case is: Schedule discovery workshops before work starts on complex stories.

D:

This preventive step mitigates a different project risk (syllabus section 4.4): A payments organization uses an outdated checklist for card-present terminals after introducing mobile wallets, and every checklist item passes despite a missing wallet refund path. The targeted safeguard for the current case is: Schedule discovery workshops before work starts on complex stories.

Question 705

A test analyst investigates the following quality concern: A flight booking story says refunds must complete within seven days, but a test expects exactly seven days instead of verifying the maximum permitted time. Which testing activity or corrective action best addresses this situation?

  1. Resolve conflicting examples through joint business, legal and test discussion before implementation.
  2. Implement meaningful assertions and demonstrate that a deliberate defect makes the acceptance check fail.
  3. Add negative cases for empty uploads and duplicate submission behavior.
  4. Clarify the acceptance criterion as a deadline inequality and test before, at and after the permitted limit.

Explanation

Correct Answer

D:

The targeted action is: Clarify the acceptance criterion as a deadline inequality and test before, at and after the permitted limit. It addresses the underlying software-testing principle: Acceptance criteria require precise interpretation to create correct expected outcomes. The relevant confirming evidence is: Refunds by day seven pass while an eight-day completion violates the criterion.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 4.5, Collaboration-based Test Approaches): A health portal has conflicting acceptance examples for whether an unsigned consent form can unlock record sharing, and the team implements whichever one it reads first. The present problem instead depends on: Acceptance criteria require precise interpretation to create correct expected outcomes.

B:

This choice is a useful response to a different testing situation (section 4.5, Collaboration-based Test Approaches): A service team automates its Gherkin scenarios with step definitions that always return success regardless of the application's actual state. The present problem instead depends on: Acceptance criteria require precise interpretation to create correct expected outcomes.

C:

This choice is a useful response to a different testing situation (section 4.4, Experience-based Test Techniques): A senior tester applies error guessing to a bulk import and notices that zero-byte and duplicate-file inputs are absent from formal cases. The present problem instead depends on: Acceptance criteria require precise interpretation to create correct expected outcomes.

Question 706

A test analyst investigates the following quality concern: A flight booking story says refunds must complete within seven days, but a test expects exactly seven days instead of verifying the maximum permitted time. Which observation best verifies that the stated testing issue is addressed?

  1. A proposed implementation that contradicts the scenario fails the agreed acceptance check.
  2. Refunds by day seven pass while an eight-day completion violates the criterion.
  3. The same approved numerical example produces matching expected values at component and acceptance levels.
  4. A $150 Premium order receives no rebate while a $250 Premium order receives the rebate.

Explanation

Correct Answer

B:

This is the expected verification outcome: Refunds by day seven pass while an eight-day completion violates the criterion. It directly checks the corrective activity (Clarify the acceptance criterion as a deadline inequality and test before, at and after the permitted limit.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: An agile team writes Given-When-Then scenarios only after coding, so the examples merely reproduce existing behavior rather than the intended business rule. It does not establish the required result for this case: Refunds by day seven pass while an eight-day completion violates the criterion.

C:

This result may validate another testing scenario: An agile banking team writes different expected amounts in unit tests and acceptance examples because they were specified by different groups without collaboration. It does not establish the required result for this case: Refunds by day seven pass while an eight-day completion violates the criterion.

D:

This result may validate another testing scenario: A pricing page offers a 10% rebate only when membership is Premium and purchase value is at least $200, yet the case set excludes Premium orders below the threshold. It does not establish the required result for this case: Refunds by day seven pass while an eight-day completion violates the criterion.

Question 707

A test analyst investigates the following quality concern: A flight booking story says refunds must complete within seven days, but a test expects exactly seven days instead of verifying the maximum permitted time. Which testing concept or underlying cause best explains the reported problem?

  1. Acceptance criteria require precise interpretation to create correct expected outcomes.
  2. Examples and criteria help uncover state-dependent behavior missing from simple rules.
  3. A useful user story communicates stakeholder need and value rather than being only an implementation request.
  4. Experience-based testing complements but does not replace structured black-box techniques.

Explanation

Correct Answer

A:

The most relevant explanation is: Acceptance criteria require precise interpretation to create correct expected outcomes. This describes why the original situation (A flight booking story says refunds must complete within seven days, but a test expects exactly seven days instead of verifying the maximum permitted time.) merits the response: Clarify the acceptance criterion as a deadline inequality and test before, at and after the permitted limit.

Incorrect Answers

B:

This principle could explain a different testing issue: An ATM team specifies 'if PIN invalid then reject' but never specifies what happens after three consecutive failures, leaving an account-lockout security gap. The present case is better explained by: Acceptance criteria require precise interpretation to create correct expected outcomes.

C:

This principle could explain a different testing issue: A shipping team's testers receive a story with the words 'As a user' but no actual business benefit, leading to tests that optimize a technically valid but irrelevant feature. The present case is better explained by: Acceptance criteria require precise interpretation to create correct expected outcomes.

D:

This principle could explain a different testing issue: A tester relies on a checklist of historic outages and misses a newly required age boundary in a registration feature. The present case is better explained by: Acceptance criteria require precise interpretation to create correct expected outcomes.

Question 708

A test analyst investigates the following quality concern: A flight booking story says refunds must complete within seven days, but a test expects exactly seven days instead of verifying the maximum permitted time. Which repeatable testing practice most directly reduces recurrence of this problem?

  1. Review scenario sets for contradictions before automation.
  2. Hold example-mapping sessions before starting complex story development.
  3. Check temporal phrases such as 'within' and 'at least' during acceptance example review.
  4. Review checklists with product owners after significant capability changes.

Explanation

Correct Answer

C:

This safeguard specifically targets the contributing cause: Check temporal phrases such as 'within' and 'at least' during acceptance example review. It addresses the principle (Acceptance criteria require precise interpretation to create correct expected outcomes.) and can be assessed by: Refunds by day seven pass while an eight-day completion violates the criterion.

Incorrect Answers

A:

This preventive step mitigates a different project risk (syllabus section 4.5): A health portal has conflicting acceptance examples for whether an unsigned consent form can unlock record sharing, and the team implements whichever one it reads first. The targeted safeguard for the current case is: Check temporal phrases such as 'within' and 'at least' during acceptance example review.

B:

This preventive step mitigates a different project risk (syllabus section 4.5): An agile team writes Given-When-Then scenarios only after coding, so the examples merely reproduce existing behavior rather than the intended business rule. The targeted safeguard for the current case is: Check temporal phrases such as 'within' and 'at least' during acceptance example review.

D:

This preventive step mitigates a different project risk (syllabus section 4.4): A payments organization uses an outdated checklist for card-present terminals after introducing mobile wallets, and every checklist item passes despite a missing wallet refund path. The targeted safeguard for the current case is: Check temporal phrases such as 'within' and 'at least' during acceptance example review.

Question 709

In a fictional application-delivery project, the team reports: A product team writes acceptance examples for the happy path only and discovers after release that malformed address input crashes shipping label creation. Which testing activity or corrective action best addresses this situation?

  1. Resolve conflicting examples through joint business, legal and test discussion before implementation.
  2. Add representative invalid and exception examples during collaborative scenario review.
  3. Specify acceptance criteria using customer type, qualifying basket value and explicit expected discount.
  4. Follow the evidence with a bounded additional exploration and document the new defect.

Explanation

Correct Answer

B:

The targeted action is: Add representative invalid and exception examples during collaborative scenario review. It addresses the underlying software-testing principle: Acceptance examples should communicate relevant failure behavior as well as successful scenarios. The relevant confirming evidence is: A malformed address receives the expected user-facing validation rather than crashing.

Incorrect Answers

A:

This choice is a useful response to a different testing situation (section 4.5, Collaboration-based Test Approaches): A health portal has conflicting acceptance examples for whether an unsigned consent form can unlock record sharing, and the team implements whichever one it reads first. The present problem instead depends on: Acceptance examples should communicate relevant failure behavior as well as successful scenarios.

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: Acceptance examples should communicate relevant failure behavior as well as successful scenarios.

D:

This choice is a useful response to a different testing situation (section 4.4, Experience-based Test Techniques): A tester discovers a severe navigation problem during a chartered exploratory session but stops investigating because the issue is not in the prewritten script. The present problem instead depends on: Acceptance examples should communicate relevant failure behavior as well as successful scenarios.

Question 710

In a fictional application-delivery project, the team reports: A product team writes acceptance examples for the happy path only and discovers after release that malformed address input crashes shipping label creation. Which observation best verifies that the stated testing issue is addressed?

  1. The team agrees on a measurable checkout completion expectation and corresponding examples.
  2. A malformed address receives the expected user-facing validation rather than crashing.
  3. The refined story links the feature to a meaningful workflow and acceptance outcome.
  4. Tests include each feasible condition combination and verify its applicable discount outcome.

Explanation

Correct Answer

B:

This is the expected verification outcome: A malformed address receives the expected user-facing validation rather than crashing. It directly checks the corrective activity (Add representative invalid and exception examples during collaborative scenario review.) for the described testing problem.

Incorrect Answers

A:

This result may validate another testing scenario: 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. It does not establish the required result for this case: A malformed address receives the expected user-facing validation rather than crashing.

C:

This result may validate another testing scenario: A shipping team's testers receive a story with the words 'As a user' but no actual business benefit, leading to tests that optimize a technically valid but irrelevant feature. It does not establish the required result for this case: A malformed address receives the expected user-facing validation rather than crashing.

D:

This result may validate another testing scenario: An invoice discount rule differs between new and returning customers only when a coupon is valid, but testers verify each condition independently and miss their interaction. It does not establish the required result for this case: A malformed address receives the expected user-facing validation rather than crashing.