CTFL_SYLL_4.0 Online Practice Questions

Explanation:
This answer is correct because equivalence partitioning is a test design technique that divides the input domain of a system or component into partitions of equivalent data, such that each partition is expected to produce the same output or behavior. Equivalence partitioning aims to reduce the number of test cases by selecting one representative value from each partition. In this case, the input domain of the TAS can be divided into four partitions based on the bonus rules: less than 50k, between 50k and 80k, between 80k and 120k, and more than 120k.The test cases in the answer belong to the same partition, which is between 80k and 120k, and they are expected to produce the same output, which is a bonus of 15%.
Reference: ISTQB Glossary of Testing Terms v4.0, ISTQB Foundation Level Syllabus v4.0, Section 2.3.2.1

Explanation:
The whole-team approach promotes collaboration among stakeholders (business representatives, developers, and testers) to ensure better quality and project success (A). This approach allows for early identification of issues, enhances shared responsibility, and improves software quality.
Option C is a valid but indirect benefit, while options B and D do not directly describe the core advantage of the whole-team approach.
Reference: ISTQB CTFL v4.0 Syllabus, Section 1.5.2 C The Whole-Team Approach

Explanation:
Static analysis requires access to work 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).
Reference: ISTQB CTFL v4.0 Syllabus, Section 3.1.1 C Static Analysis

Explanation:
Equivalence partitioning involves dividing input data into partitions that are treated the same by the system under test.
The given specifications create overlapping partitions:
For n<0n < 0n<0, an error message "Value out of range" is issued.
For 0<n<1000 < n < 1000<n<100, the factorial is calculated.
For 100<n<200100 < n < 200100<n<200, the same error message "Value out of range" is issued.
However, the range between 0 and 100 is exclusive of 0 and 100, meaning that the partitions overlap and create ambiguity for the boundary values. Thus, the correct statement is that the requirements are not correct because the partitions are overlapping.

Explanation:
Looking for defects in a system does not require ignoring system details, but rather paying attention to them and understanding how they affect the system’s quality, functionality, and usability. Ignoring system details could lead to missing important defects or testing irrelevant aspects of the system.
Identifying defects may be perceived as criticism against product, especially by the developers or stakeholders who are invested in the product’s success. However, identifying defects is not meant to be a personal attack, but rather a constructive feedback that helps to improve the product and ensure its alignment with the requirements and expectations of the users and clients.
Looking for defects in system requires professional pessimism and curiosity, as testers need to anticipate and explore the possible ways that the system could fail, malfunction, or behave unexpectedly. Professional pessimism means being skeptical and critical of the system’s quality and reliability, while curiosity means being eager and interested in finding out the root causes and consequences of the defects.
Testing is often seen as a destructive activity instead of constructive activity, as it involves finding and reporting the flaws and weaknesses of the system, rather than creating or enhancing it. However, testing is actually a constructive activity, as it contributes to the system’s improvement, verification, validation, and optimization, and ultimately to the delivery of a high-quality product that meets the needs and expectations of the users and clients.