CTFL_SYLL_4.0 VALID TEST TOPICS - CTFL_SYLL_4.0 EXAM REVIEW

CTFL_Syll_4.0 Valid Test Topics - CTFL_Syll_4.0 Exam Review

CTFL_Syll_4.0 Valid Test Topics - CTFL_Syll_4.0 Exam Review

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ISQI ISTQB Certified Tester Foundation Level (CTFL) v4.0 Sample Questions (Q181-Q186):

NEW QUESTION # 181
An application is subjected to a constant load for an extended period of time as part of a performance test.
While running this test, the response time of the application steadily slows down, which results in a requirement not being met. This slowdown is caused by a memory leak where the application code does not properly release some of the dynamically allocated memory when it is no longer needed.
Which of the following statements is true?

  • A. The slowdown is a defect the memory leak is a failure
  • B. The slowdown is a defect while the memory leak is an error
  • C. The slowdown is a failure while the memory leak is a defect
  • D. The slowdown is an error the memory leak is a defect

Answer: C

Explanation:
In the ISTQB terminology:
* A defect (also known as a bug or fault) is an issue in the code that can cause a failure.
* A failure is the observable incorrect behavior or output of the software due to a defect.
In this scenario, the memory leak is the defect in the application code that causes the application not to release dynamically allocated memory properly. The observable effect of this defect, which is the slowdown in response time, is considered a failure because it is the manifestation of the defect that prevents the application from meeting its performance requirements.


NEW QUESTION # 182
In a two-hour uninterrupted test session, performed as part of an iteration on an Agile project, a heuristic checklist was used to help the tester focus on some specific usability issues of a web application.
The unscripted tests produced by the tester's experience during such session belong to which one of the following testing quadrants?

  • A. Q1
  • B. Q2
  • C. Q4
  • D. Q3

Answer: D

Explanation:
Explanation
The unscripted tests produced by the tester's experience during the two-hour test session belong to the testing quadrant Q3. The testing quadrants are a classification of testing types based on two dimensions: the test objectives (whether the testing is focused on supporting the team or critiquing the product) and the test basis (whether the testing is based on the technology or the business). The testing quadrants are labeled as Q1, Q2, Q3, and Q4, and each quadrant represents a different testing perspective, such as unit testing, acceptance testing, usability testing, or performance testing. The testing quadrant Q3 corresponds to the testing types that have the objective of critiquing the product from the business perspective, such as exploratory testing, usability testing, user acceptance testing, alpha testing, beta testing, etc. The unscripted tests performed by the tester in the given scenario are examples of exploratory testing and usability testing, as they are based on the tester's experience, intuition, and learning of the web application, and they focus on some specific usabilityissues, such as the user interface, the user satisfaction, the user feedback, etc. The other options are incorrect, because:
The testing quadrant Q1 corresponds to the testing types that have the objective of supporting the team from the technology perspective, such as unit testing, component testing, integration testing, system testing, etc. These testing types are usually performed by developers or testers who have access to the source code, the design, the architecture, or the configuration of the software system, and they aim to verify the functionality, the quality, and the reliability of the software system at different levels of integration.
The testing quadrant Q2 corresponds to the testing types that have the objective of supporting the team from the business perspective, such as functional testing, acceptance testing, story testing, scenario testing, etc. These testing types are usually performed by testers or customers who have access to the requirements, the specifications, the user stories, or the business processes of the software system, and they aim to validate that the software system meets the expectations and the needs of the users and the stakeholders.
The testing quadrant Q4 corresponds to the testing types that have the objective of critiquing the product from the technology perspective, such as performance testing, security testing, reliability testing, compatibility testing, etc. These testing types are usually performed by testers or specialists who have access to the tools, the metrics, the standards, or the benchmarks of the software system, and they aim to evaluate the non-functional aspects of the software system, such as the efficiency, the security, the reliability, or the compatibility of the software system under different conditions or environments.
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 Lifecycles ISTQB Glossary of Testing Terms v4.0, Testing Quadrant, Exploratory Testing, Usability Testing, Unit Testing, Component Testing, Integration Testing, System Testing, Functional Testing, Acceptance Testing, Story Testing, Scenario Testing, Performance Testing, Security Testing, Reliability Testing, Compatibility Testing


NEW QUESTION # 183
Consider the following list of possible benefits of retrospectives (A to D):

  • A. Better cooperation between development and testing
    ... and the list of possible characteristics of retrospectives (1 to 4) that enable achieving these benefits:
    The possibility of implementing suggestions for process improvement
    The opportunity to raise problems and propose points for improvement
    The regular review and optimization of the collaboration between team members The possibility of addressing and solving deficiencies in the extent and quality of the requirements Which ONE of the following options presents the BEST mapping between benefits and characteristics from retrospectives?
  • B. Improved quality of the test basis
  • C. A4 - B3 - C2 - D1
  • D. A2 - B1 - C4 - D3
  • E. A1 - B4 - C3 - D2
  • F. Increased test effectiveness/efficiency
  • G. Team bonding and learning
  • H. A3 - B2 - C1 - D4

Answer: F

Explanation:
Retrospectives provide value by fostering improvement and collaboration. The correct mapping is:
* A2: Team bonding occurs when teams openly discuss issues.
* B1: Test effectiveness increases when process improvements are implemented.
* C4: Test basis improves by addressing requirement deficiencies.
* D3: Cooperation improves through regular review of collaboration.
Reference:ISTQB CTFL v4.0 Syllabus, Section 2.1.6 - Retrospectives


NEW QUESTION # 184
A requirement specifies that if the total amount of sales (TAS) made during the year by a corporate seller is
300000€ or more, the bonus that must be paid to the seller is 100% of a certain amount agreed upon at the beginning of the year. The software contains a fault as it implements this requirement with the decision "IF (TAS = 300000)" instead of "IF (TAS >= 300000)". The application of the 3-value boundary value analysis to this problem consists of the following three test cases (TAS is an integer variable):
TC1 = 299999 TC2=300000 TC3=300001
Which of the following statements is true?

  • A. TC1 would highlight the fault
  • B. TC2 would highlight the fault
  • C. TC3 would highlight the fault
  • D. None of the three test cases would highlight the fault

Answer: C

Explanation:
The problem described involves a software implementation error in a decision statement for calculating a bonus based on the Total Amount of Sales (TAS). The requirement states that if TAS is 300,000 or more, a bonus should be paid. However, the software incorrectly implements this with "IF (TAS = 300000)" instead of "IF (TAS >= 300000)".
Applying Boundary Value Analysis (BVA) to this situation involves selecting test cases at the boundaries of the input domain, including just below, at, and just above the boundary conditions.
* Test Case TC1 = 299999:
* This value is just below the boundary (300,000).
* Expected Result: No bonus should be paid.
* Actual Result: No bonus paid.
* TC1does not highlight the fault because the implemented condition "IF (TAS = 300000)" and the correct condition "IF (TAS >= 300000)" both yield the same result (no bonus).
* Test Case TC2 = 300000:
* This value is exactly at the boundary.
* Expected Result: Bonus should be paid.
* Actual Result: Bonus paid.
* TC2does not highlight the fault because the implemented condition "IF (TAS = 300000)" and the correct condition "IF (TAS >= 300000)" both yield the same result (bonus paid).
* Test Case TC3 = 300001:
* This value is just above the boundary.
* Expected Result: Bonus should be paid.
* Actual Result: No bonus paid due to the incorrect implementation.
* TC3highlights the fault because the implemented condition "IF (TAS = 300000)" fails to pay the bonus, whereas the correct condition "IF (TAS >= 300000)" would pay the bonus.
* BVA focuses on the edges of input ranges where errors are more likely.
* The critical values are just below, at, and just above the boundary.
Boundary Value Analysis (BVA):Verification:According to the ISTQB CTFL syllabus, BVA is an essential technique for identifying potential errors at the boundaries of input ranges. This is because developers are more likely to make mistakes at these extremes.
Therefore,TC3 (300001)is the test case that would highlight the fault in the software's implementation of the decision condition.


NEW QUESTION # 185
Which of the following applications will be the MOST suitable for testing by Use Cases

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

Answer: D

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 # 186
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