ISTQB CTFL-Foundation Exam Dumps

Decision table testing is a black-box test design technique used to test system requirements and to ensure that different combinations of inputs result in appropriate outputs. It is especially useful for testing complex business logic and rules where various combinations of conditions need to be verified.

An independent test function in an organization helps improve defect finding during reviews and testing by providing an unbiased perspective on the software. Independent testers are not influenced by the development team's constraints and can evaluate the software more objectively. This leads to the identification of defects that might be overlooked by developers who are too close to their own code. Independent testing enhances the quality and reliability of the software by bringing fresh insights and ensuring thorough testing.

When evaluating risks, both the likelihood of failure and the potential cost of impact must be considered. The risk with the highest level is determined by the product of these two factors. In this case, a 10% likelihood of failure with a potential cost of impact of $500,000 results in a higher risk (expected impact) compared to the other options. The expected impact is calculated as likelihood multiplied by impact, which is higher for option B.

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Specification-based techniques, also known as black-box techniques, derive test cases from the specifications or requirements of the system. These techniques can be particularly useful when the test basis (such as documentation or requirements) is poorly defined or incomplete, as they provide a structured approach to testing based on the available specifications. This ensures that testing can proceed even when detailed documentation is lacking, helping to identify defects related to missing or incorrect functionality.

Incidents, or defects, are typically raised against artifacts such as requirements, documentation, and test cases when they do not meet their expected outcomes or contain errors. However, improvements suggested by users are not considered incidents, as they are enhancements or changes that users would like to see, rather than defects in the current functionality or documentation.