CTFL_SYLL_4.0 PASSED | VCE CTFL_SYLL_4.0 FREE

CTFL_Syll_4.0 Passed | Vce CTFL_Syll_4.0 Free

CTFL_Syll_4.0 Passed | Vce CTFL_Syll_4.0 Free

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ISQI ISTQB Certified Tester Foundation Level (CTFL) v4.0 Sample Questions (Q163-Q168):

NEW QUESTION # 163
Confirmation testing is performed after:

  • A. a defect is fixed, and if such testing is successful then the regression tests that are relevant for such fix can be executed
  • B. a defect is fixed and after other tests do not find any side-effect introduced in the software as a result of such fix
  • C. a failed test, and aims to run that test again to confirm that the same behavior still occurs and thus appears to be reproducible
  • D. the execution of an automated regression test suite to confirm the absence of false positives in the test results

Answer: A

Explanation:
Confirmation testing is performed after a defect is fixed, and if such testing is successful then the regression tests that are relevant for such fix can be executed. Confirmation testing, also known as re-testing, is the process of verifying that a defect has been resolved by running the test case that originally detected the defect.
Confirmation testing is usually done before regression testing, which is the process of verifying that no new defects have been introduced in the software as a result of changes or fixes. Therefore, option D is the correct answer.
References: ISTQB Certified Tester Foundation Level Syllabus v4.01, Section 2.4.1, page 28; ISTQB Glossary v4.02, page 15.


NEW QUESTION # 164
Which of the following statements about white-box test techniques is true?

  • A. Code-related white-box test techniques are not required to measure the actual code coverage achieved by black-box testing, as code coverage can be measured using the coverage criteria associated with black-box test techniques
  • B. Code-related white-box test techniques provide an objective measure of coverage and can be used to complement black-box test techniques to increase confidence in the code
  • C. Branch coverage is the most thorough code-related white-box test technique, and therefore applicable standards prescribe achieving full branch coverage at the highest safety levels for safety-critical systems
  • D. Achieving full statement coverage and full branch coverage for a software product means that such software product has been fully tested and there are no remaining bugs within the code

Answer: B

Explanation:
This answer is correct because code-related white-box test techniques are test design techniques that use the structure of the code to derive test cases. They provide an objective measure of coverage, such as statement coverage, branch coverage, or path coverage, which indicate how much of the code has been exercised by the test cases. Code-related white-box test techniques can be used to complement black-box test techniques, which are test design techniques that use the functional or non-functional requirements of the system or component to derive test cases. By combining both types of techniques, testers can increase their confidence in the code and find more defects. Reference: ISTQB Glossary of Testing Terms v4.0, ISTQB Foundation Level Syllabus v4.0, Section 2.3.2.2


NEW QUESTION # 165
Which ONE of the following options CANNOT be subjected to static analysis?

  • A. Source code
  • B. BPMN (Business Process Modeling and Notation) models
  • C. COTS (Commercial off-the-shelf)
  • D. UML (Unified Modeling Language) models

Answer: C

Explanation:
Static analysis requires access towork products like source code, models, or documentation, making it impossible to analyze Commercial off-the-shelf (COTS) software(A) because its source code is typically unavailable. Static analysis is applicable to source code (B), BPMN models (C), and UML diagrams (D).


NEW QUESTION # 166
Which of the following applications will be the MOST suitable for testing by Use Cases

  • A. A billing system used to calculate monthly charge based or large number of subscribers parameters
  • B. Accuracy and usability of a new Navigation system compared with previous system
  • C. Suitability and performance of a Multi media (audio video based) system to a new operating system
  • D. The ability of an Anti virus package to detect and quarantine a new threat

Answer: B

Explanation:
A new navigation system compared with a previous system is the most suitable application for testing by use cases, because it involves a high level of interaction between the user and the system, and the expected behavior and outcomes of the system are based on the user's needs and goals. Use cases can help to specify the functional requirements of the new navigation system, such as the ability to enter a destination, select a route, follow the directions, receive alerts, etc. Use cases can also help to compare the accuracy and usability of the new system with the previous system, by defining the success and failure scenarios, the preconditions and postconditions, and the alternative flows of each use case. Use cases can also help to design and execute test cases that cover the main and exceptional paths of each use case, and to verify the satisfaction of the user's expectations.
The other options are not the most suitable applications for testing by use cases, because they do not involve a high level of interaction between the user and the system, or the expected behavior and outcomes of the system are not based on the user's needs and goals. A billing system used to calculate monthly charge based on a large number of subscriber parameters is more suitable for testing by data-driven testing, which is a technique for testing the functionality and performance of a system or component by using a large set of input and output data. The ability of an antivirus package to detect and quarantine a new threat is more suitable for testing by exploratory testing, which is a technique for testing the functionality and security of a system or component by using an informal and flexible approach, based on the tester's experience and intuition. The suitability and performance of a multimedia (audio video based) system to a new operating system is more suitable for testing by compatibility testing, which is a technique for testing the functionality and performance of a system or component by using different hardware, software, or network environments. References = CTFL 4.0 Syllabus, Section 3.1.1, page 28-29; Section 4.1.1, page 44-45; Section 4.2.1, page 47-48.


NEW QUESTION # 167
Which of the following issues cannot be identified by static analysis tools?

  • A. Referencing a variable with an undefined value
  • B. Potentially endless loops
  • C. Security vulnerabilities
  • D. Very low MTBF (Mean Time Between failure)

Answer: D

Explanation:
Static analysis tools are software tools that examine the source code of a program without executing it. They can detect various types of issues, such as syntax errors, coding standardsviolations, security vulnerabilities, and potential bugs12. However, static analysis tools cannot identify issues that depend on the runtime behavior or performance of the program, such as very low MTBF (Mean Time Between failure)3. MTBF is a measure of the reliability of a system or component. It is calculated by dividing the total operating time by the number of failures. MTBF reflects how often a system or component fails during its expected lifetime. Static analysis tools cannot measure MTBF because they do not run the program or observe its failures. MTBF can only be estimated by dynamic testing, which involves executing the program under various conditions and collecting data on its failures4. Therefore, very low MTBF is an issue that cannot be identified by static analysis tools. The other options, such as potentially endless loops, referencing a variable with an undefined value, and security vulnerabilities, are issues that can be identified by static analysis tools. Static analysis tools can detect potentially endless loops by analyzing the control flow and data flow of the program and checking for conditions that may never become false5. Static analysis tools can detect referencing a variable with an undefined value by checking the scope and initialization of variables and reporting any use of uninitialized variables6. Static analysis tools can detect security vulnerabilities by checking for common patterns of insecure code, such as buffer overflows, SQL injections, cross-site scripting, and weak encryption. References = What Is Static Analysis? Static Code Analysis Tools - Perforce Software, How Static Code Analysis Works | Perforce, Static Code Analysis: Techniques, Top 5 Benefits & 3 Challenges, What is MTBF? Mean Time Between Failures Explained | Perforce, Static analysis tools - Software Testing MCQs -CareerRide, ISTQB_Chapter3 | Quizizz, [Static Code Analysis for Security Vulnerabilities | Perforce].


NEW QUESTION # 168
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