ISTQB Updated CTFL-Foundation Exam Questions and Answers by roan

Software testing contributes to the quality of delivered software by identifying root causes of defects from past projects. This allows the team to learn from previous mistakes and improve their processes, ultimately reducing the defect count in future projects.

Maintenance testing is conducted on the software after it has been delivered to address any issues or changes required due to defects, environment changes, or new requirements. The ISTQB syllabus explains that maintenance testing typically involves impact analysis to determine the extent of regression testing required, thus optimizing the testing effort and focusing on affected areas​​.

Boundary Value Analysis (BVA) involves testing at the boundaries between partitions. For the given tax calculation system, the boundaries include $4,000 (tax-free), $5,500 (next bracket start), and $33,500 (higher bracket start). Testing with $5,000 is valid because it is a boundary value between the tax-free and the 10% tax bracket.

A data-driven approach to test automation design involves separating the test data inputs from the test scripts. This approach allows the same generic script to read different sets of test data and execute the same test steps with various inputs. This method enhances reusability and efficiency in automated testing by allowing testers to run multiple test scenarios using the same script but different data sets​​.