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ISQI ISTQB Certified Tester Foundation Level (CTFL) v4.0 Sample Questions (Q171-Q176):

NEW QUESTION # 171
A state transition diagram describes a control system's behavior in different operational modes. The initial state is"NORMAL MODE".
Which ONE of the following test cases covers anINVALID sequence?

A. NORMAL MODE # DIAGNOSTIC MODE # DEGRADED MODE # EMERGENCY MODE #
DIAGNOSTIC MODE # NORMAL MODE # DEGRADED MODE
B. NORMAL MODE # DIAGNOSTIC MODE # DEGRADED MODE # EMERGENCY MODE #
DIAGNOSTIC MODE # NORMAL MODE # DIAGNOSTIC MODE
C. NORMAL MODE # DIAGNOSTIC MODE # NORMAL MODE # DIAGNOSTIC MODE #
EMERGENCY MODE # DIAGNOSTIC MODE # NORMAL MODE
D. NORMAL MODE # DEGRADED MODE # NORMAL MODE # DIAGNOSTIC MODE #
DEGRADED MODE # EMERGENCY MODE # DIAGNOSTIC MODE

Answer: C

Explanation:
State transition testing validatesvalid and invalid state transitionsbased on defined rules.
* D is invalidbecause it transitionsfrom DIAGNOSTIC MODE directly to EMERGENCY MODE, which isnot a valid state changein most systems.
* Other options follow valid sequences according tostate transition rules.

NEW QUESTION # 172
Which ONE of the following statements does NOT describe how testing contributes to higher quality?

A. The testing of software demonstrates the absence of defects.
B. Performing a review of the requirement specifications before implementing the system can enhance quality.
C. Software testing identifies defects, which can be used to improve development activities.
D. Properly designed tests that pass reduce the level of risk in a system.

Answer: A

Explanation:
The testing of software does not demonstrate the absence of defects, but rather the presence of defects or the conformance of the software to the specified requirements1. Testing can never prove that the software is defect-free, as it is impossible to test all possible scenarios, inputs, outputs, and behaviors of the software2. Testing can only provide a level of confidence in the quality of the software, based on the coverage, effectiveness, and efficiency of the testing activities3.
The other options are correct because:
A) Properly designed tests that pass reduce the level of risk in a system, as they verify that the system meets the expected quality attributes and satisfies the needs and expectations of the users and clients4. Risk is the potential for loss or harm due to the occurrence of an undesirable event5. Testing can help to identify, analyze, prioritize, and mitigate the risks associated with the software product and project6.
C) Software testing identifies defects, which can be used to improve development activities, as they provide feedback on the quality of the software and the effectiveness of the development processes7. Defects are flaws or errors in the software that cause it to deviate from the expected or required results or behavior. Testing can help to detect, report, track, and resolve the defects, and prevent them from recurring in the future.
D) Performing a review of the requirement specifications before implementing the system can enhance quality, as it can ensure that the requirements are clear, complete, consistent, testable, and aligned with the needs and expectations of the users and clients. Requirements are the specifications of what the software should do and how it should do it. Testing can help to validate that the requirements are met by the software, and verify that the software is implemented according to the requirements.
Reference =
1 ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 10
2 ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 11
3 ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 12
4 ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 13
5 ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 97
6 ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 98
7 ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 14
[8] ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 15
[9] ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 16
[10] ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 17
[11] ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 18
[12] ISTQB® Certified Tester Foundation Level Syllabus v4.0, 2023, p. 19

NEW QUESTION # 173
Consider the following user story about the authentication functionality of an e-commerce website:
"As a logged-in user, I want to change my current password with a new one, so that I can make my account safer".
The following are some of the acceptance criteria defined for the user story:
[a] After the logged-in user has successfully changed his password, an email confirming the change must be sent to him
[b] To successfully change the password, the logged-in user must enter the current password, enter a new valid password, and finally confirm by pressing the 'Change Password' button
[c] To be valid, the new password entered by the logged-in user is not only required to meet the criteria related to the length and type of characters, but must also be different form the last 5 passwords of that user
[d] A dedicated error message must be presented to the logged-in user when he enters a wrong current password
[e] A dedicated error message must be presented to the logged-in user when he enters the correct current password, but enters an invalid password Based only on the given information, which of the following ATDD tests is most likely to be written first?

A. The logged-in user enters the correct current password, enters a valid new password (different from the last 5 passwords), presses the Change Password' button, and finally receives the e-mail confirming that the password has been successfully changed
B. The logged-in user submits a purchase order containing ten items, selects to pay with a Visa credit card, enters credit card information of a valid card, presses the 'Confirm' button, and finally views the dedicated message confirming that the purchase has been successful
C. The logged-in user enters a wrong current password and views the dedicated error message
D. The logged-in user enters the correct current password, enters an invalid password, and finally views the dedicated error

Answer: A

Explanation:
ATDD stands for Acceptance Test-Driven Development, which is a collaborative approach to software development and testing, in which the acceptance criteria of a user story are defined and automated as executable tests before the implementation of the software system. ATDD tests are usually written in a Given-When-Then format, which describes the preconditions, the actions, and the expected outcomes of a test scenario. ATDD tests are intended to verify that the software system meets the expectations and the needs of the users and the stakeholders, as well as to provide feedback and guidance for the developers and the testers.
Based on the given information, the ATDD test that is most likely to be written first is the one that corresponds to option B, which is:
Given the logged-in user is on the Change Password page When the user enters the correct current password, enters a valid new password (different from the last 5 passwords), and presses the Change Password button Then the user receives an email confirming that the password has been successfully changed This ATDD test is most likely to be written first, because it covers the main functionality and the happy path of the user story, as well as the most important acceptance criterion [a]. It also verifies that the user can change the password with a valid new password that meets the criteria related to the length, the type of characters, and the history of the passwords, as specified in the acceptance criterion [c]. The other options are not likely to be written first, because they either cover less critical or less frequent scenarios, such as entering a wrong current password [d] or an invalid new password [e], or they are not related to the user story or the acceptance criteria at all, such as submitting a purchase order [d]. References: ISTQB Certified Tester Foundation Level (CTFL) v4.0 sources and documents:
* ISTQB Certified Tester Foundation Level Syllabus v4.0, Chapter 1.3.1, Testing in Software Development Lifecycles1
* ISTQB Glossary of Testing Terms v4.0, Acceptance Test-Driven Development, User Story, Acceptance Criterion, Given-When-Then2

NEW QUESTION # 174
Which of the following work products cannot be examined by static analysis?

A. Compiled code
B. Source code
C. Test plans
D. Formal models

Answer: C

Explanation:
Static analysis is the process of examining the work products of a software development or testing activity without executing them. Static analysis can be applied to various types of work products, such as requirements, design, code, test cases, etc. However, test plans are not suitable for static analysis, because they are high-level documents that describe the test objectives, scope, strategy, resources, schedule, and risks of a testing project. Test plans are not executable or formalized in a way that static analysis tools can analyze them. Therefore, option A is the correct answer.
ISTQBCertified Tester Foundation Level Syllabus v4.01, Section 2.2.1, page 20; ISTQBGlossary v4.
02, page 45.

NEW QUESTION # 175
The four test levels used in ISTQB syllabus are:
1. Component (unit) testing
2. Integration testing
3. System testing
4. Acceptance testing
An organization wants to do away with integration testing but otherwise follow V-model. Which of the following statements is correct?

A. It is allowed as organizations can decide on men test levels to do depending on the context of the system under test
B. It is not allowed because integration testing is a very important test level and ignoring i: means definite poor product quality
C. It is allowed because integration testing is not an important test level arc! can be dispensed with.
D. It is not allowed as organizations can't change the test levels as these are chosen on the basis of the SDLC (software development life cycle) model

Answer: D

Explanation:
The V-model is a software development life cycle model that defines four test levels that correspond to four development phases: component (unit) testing with component design, integration testing with architectural design, system testing with system requirements, and acceptance testing with user requirements. The V-model emphasizes the importance of verifying and validating each phase of development with a corresponding level of testing, and ensuring that the test objectives, test basis, and test artifacts are aligned and consistent across the test levels. Therefore, an organization that wants to follow the V-model cannot do away with integration testing, as it would break the symmetry and completeness of the V-model, and compromise the quality and reliability of the software or system under test. Integration testing is a test level that aims to test the interactions and interfaces between components or subsystems, and todetect any defects or inconsistencies that may arise from the integration of different parts of the software or system. Integration testing is essential for ensuring the functionality, performance, and compatibility of the software or system as a whole, and for identifying and resolving any integration issues early in the development process. Skipping integration testing would increase the risk of finding serious defects later in the test process, or worse, in the production environment, which would be more costly and difficult to fix, and could damage the reputation and credibility of the organization. Therefore, the correct answer is D.
The other options are incorrect because:
* A. It is not allowed as organizations can decide on the test levels to do depending on the context of the system under test. While it is true that the choice and scope of test levels may vary depending on the context of the system under test, such as the size, complexity, criticality, and risk level of the system, the organization cannot simply ignore or skip a test level that is defined and required by the chosen software development life cycle model. The organization must follow the principles and guidelines of the software development life cycle model, and ensure that the test levels are consistent and coherent with the development phases. If the organization wants to have more flexibility and adaptability in choosing the test levels, it should consider using a different software development life cycle model, such as an agile or iterative model, that allows for more dynamic and incremental testing approaches.
* B. It is not allowed because integration testing is not an important test level and can be dispensed with.
This statement is false and misleading, as integration testing is a very important test level that cannot be dispensed with. Integration testing is vital for testing the interactions and interfaces between components or subsystems, and for ensuring the functionality, performance, and compatibility of the software or system as a whole. Integration testing can reveal defects or inconsistencies that may not be detected by component (unit) testing alone, such as interface errors, data flow errors, integration logic errors, or performance degradation. Integration testing can also help to verify and validate the architectural design and the integration strategy of the software or system, and to ensure that the software or system meets the specified and expected quality attributes, such as reliability, usability, security, and maintainability. Integration testing can also provide feedback and confidence to the developers and stakeholders about the progress and quality of the software or system development.
Therefore, integration testing is a crucial and indispensable test level that should not be skipped or omitted.
* C. It is not allowed because integration testing is a very important test level and ignoring it means definite poor product quality. This statement is partially true, as integration testing is a very important test level that should not be ignored, and skipping it could result in poor product quality. However, this statement is too strong and absolute, as it implies that integration testing is the only factor that determines the product quality, and that ignoring it would guarantee a poor product quality. This is not necessarily the case, as there may be other factors that affect the product quality, such as the quality of the requirements, design, code, and other test levels, the effectivenessand efficiency of the test techniques and tools, the competence and experience of the developers and testers, the availability and adequacy of the resources and environment, the management and communication of the project, and the expectations and satisfaction of the customers and users. Therefore, while integration testing is a very important test level that should not be skipped, it is not the only test level that matters, and skipping it does not necessarily mean definite poor product quality, but rather a higher risk and likelihood of poor product quality.
References = ISTQB Certified Tester Foundation Level Syllabus, Version 4.0, 2018, Section 2.3, pages 16-
18; ISTQB Glossary of Testing Terms, Version 4.0, 2018, pages 38-39; ISTQB CTFL 4.0 - Sample Exam - Answers, Version 1.1, 2023, Question 104, page 36.

NEW QUESTION # 176
......

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