The test charter for the exploratory testing session is focused on buying a bus ticket, not a parking ticket. Therefore, any defect related to the payment for parking ticket is out of scope for the given test charter. The other defects are related to the functionality, usability, or reliability of buying a bus ticket, which are in scope for the test charter. References: ISTQB Certified Tester Foundation Level Agile Tester Extension Syllabus, Version 2014, Section 2.3.2 Exploratory Testing1, Section 2.3.2.1 Test Charter2; ISTQB Glossary of Testing Terms, Version 3.2, 2017, Definition of Test Charter3

1: ISTQB Certified Tester Foundation Level Agile Tester Extension Syllabus, Version 2014, Section 2.3.2 Exploratory Testing 2: ISTQB Certified Tester Foundation Level Agile Tester Extension Syllabus, Version 2014, Section 2.3.2.1 Test Charter 3: [ISTQB Glossary of Testing Terms, Version 3.2, 2017, Definition of Test Charter]

 Planning poker is a consensus-based technique for agile estimation, using a deck of cards with predefined numerical values, usually based on the Fibonacci sequence or a modified version12. Therefore, statement 1 is correct. A high test estimate usually means that the user story or task is too complex, ambiguous, or risky, and should be broken down into multiple smaller stories that are easier to understand and estimate13. Therefore, statement 3 is correct. The risk level of each backlog item should be decided before the poker session, as it can affect the estimation process and the prioritization of the work14. Therefore, statement 5 is correct. Statement 2 is incorrect, as a low test estimate usually means that the user story or task is simple, clear, and well-defined, and does not need to be broken down further13. Statement 4 is incorrect, as planning poker can involve multiple rounds of estimation, reveal, and discussion, until the team reaches a consensus or agrees to defer the item12. References: 1: ISTQB® Foundation Level Agile Tester Syllabus, Section 3.3.1, Test Automation1; 2: ASTQB Agile Tester Certification Resources, Section 3.3.1, Test Automation2; 3: Planning Poker: An Agile Estimating and Planning Technique3; 4: Planning poker: The all-in strategy for Agile estimation - Asana4

Comprehensive and Detailed Explanation From Exact Extract:

FromCTFL-AT Syllabus v4.0, Section 2.2Release and Iteration Planning:

"During early phases like Sprint Zero, testers collaborate with the team to identify the product backlog, define high-level test strategies, and contribute to the overall planning and architecture discussions."

Therefore,Option Ais correct — testerscollaborate from the beginning, not as isolated contributors.

Option BandDsuggestindividual work, which isagainst Agile principles.

Option Cis incorrect — the backlog items committed for Sprint 1 are determined duringSprint Planning, not in Sprint Zero.

Comprehensive and Detailed Explanation From Exact Extract:

FromCTFL-AT Syllabus v4.0, Section 4.1The Test Pyramid, it states:

"The test pyramid concept encourages more tests at lower levels (e.g., unit tests), with fewer tests at higher levels (e.g., system or UI tests), in order to find and fix defects as early as possible."

Therefore,Option Ais correct — thetest pyramid supports early defect detectionthrougha high volume of lower-level automated tests.

Option Bis incorrect — thetest pyramid emphasizes more tests at lower levels, not higher.

Option Cis incorrect — Agile doesn't mandate four specific levels in every system.

Option Dmisrepresents the pyramid —technology-facing tests (e.g., unit tests)areat the bottom, not the top.

According to the ISTQB Tester Foundation Level Agile Tester syllabus, acceptance criteria are a set of conditions that a user story must satisfy to be accepted by the customer or stakeholder. Acceptance criteria should be testable, meaning that they can be verified by objective measurements or observations. Testable acceptance criteria should be clear, unambiguous, complete, and consistent. Therefore, option A is the best example for testable acceptance criteria, as it specifies a clear and measurable condition for the input value of the ID field. Option B is not a good example for testable acceptance criteria, as it is vague and does not define any specific condition or expectation for the interface to External System. Option C is not a good example for testable acceptance criteria, as it is incomplete and does not specify what the specific authorization level is or how it is determined. Option D is not a good example for testable acceptance criteria, as it is subjective and not measurable. What is clear and attractive for one user may not be for another. References: ISTQB Tester Foundation Level Agile Tester syllabus, section 1.1.1, page 7; ISTQB Tester Foundation Level Agile Tester syllabus, section 1.1.2, page 8; ISTQB Tester Foundation Level Agile Tester syllabus, section 3.1.1, page 23; ISTQB Tester Foundation Level Agile Tester syllabus, section 3.1.2, page 24.

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Comprehensive and Detailed Explanation From Exact Extract:

From theCTFL-AT Syllabus v4.0, Section 4.2Continuous Integration, it describes:

"A major benefit of continuous integration is the ability to detect integration problems, code defects, and broken builds early, allowing for faster resolution."

And:

"Continuous integration allows frequent builds and tests to be performed, helping to identify and isolate problems soon after they are introduced."

This directly confirms thatOption Ais the correct answer, highlighting thecore value of continuous integration:early detection and isolationof issues.

Option Bis incorrect — retrospectives remain essential in Agile regardless of CI.

Option Cis an Agile principle, but not adirect benefittied specifically to CI.

Option Doverstates the impact of CI — while CI may help communication, it does not eliminate communication problems by itself.

Comprehensive and Detailed Explanation From Exact Extract:

FromCTFL-AT Syllabus v4.0, Section 4.3Test Automation and Continuous Integration, it states:

"Automated tests help detect regression defects quickly and can be run frequently during development, thus reducing regression risk."

So,Option Dis correct —test automation supports regression testingwithin iterations, making it an essential Agile practice.

Option Ais false —automated unit tests are designed to be fastand are ideally run with every check-in.

Option Bis incorrect — more code changesincrease, not reduce, regression risk.

Option Cis incorrect —technical debt can still existwith automation if the automation is poorly designed or not maintained.