CTAL-TA_Syll2019 Exam Dumps : ISTQB Certified Tester Advanced Level - Test Analyst (Syllabus 2019)

Interoperability is the degree to which two or more systems or components can exchange and use information. It is a crucial quality characteristic for an e-commerce product that needs to interface with backend applications, such as finance, stock control and order delivery. The test plan must include tests to verify that the COTS package can communicate and integrate with the existing systems and applications, and that the data and functionality are consistent and accurate across the interfaces. References = ISTQB Certified Tester Advanced Level Syllabus Technical Test Analyst, page 10, section 1.2.2.2.

The use case only describes the normal or happy path scenario, where the user performs a successful cash withdrawal. However, it does not consider any alternative or exceptional scenarios, such as invalid card, incorrect PIN, insufficient balance, network failure, etc. These scenarios are important to test the robustness and reliability of the ATM system, and should be included in the use case specification. References = ISTQB Certified Tester Advanced Level Syllabus Test Analyst, Section 2.2.1, Use Case Testing1; ISTQB Advanced Level Test Analyst (CTAL) Exam Study Guide, Section 2.2.1, Use Case Testing2

Classification trees are a visual way of identifying test objects and data, and pairwise testing is a technique of generating test cases that cover all possible pairs of values from different classifications. Classification trees support pairwise testing by:

• Helping to identify inputs to be used by the pairwise test technique, as each class represents a possible value for a test parameter.
• Showing the combinations needed to cover all-pairs, as each test case is a selection of one class from each classification.
• Helping to identify particular combinations of interest, as the test engineer can use the tree structure to group or prioritize classes based on their relevance or risk. References = ISTQB Advanced Level Test Analyst Syllabus 2019, section 3.2.3; Smarter Test Design with Classification Trees and Pairwise Techniques, slides 6-12.