iSQI CTAL-TA_Syll2019 Dumps

Pairwise testing is a technique that reduces the number of test cases by testing only pairs of values for each data item, instead of testing all possible combinations. Pairwise testing is based on the assumption that most defects are caused by interactions of at most two factors. Pairwise testing can be applied to this problem using the classification tree, which shows the data items and their values. By using pairwise testing, the number of test cases will be lower than exhaustive testing, which would require testing every combination of values for each data item. References =

• ISTQB Certified Tester Advanced Level Syllabus Technical Test Analyst1, page 2
• Data Combination Test (DCoT) | TMap2, section “Coverage level”
• Pairwise Software Testing - GeeksforGeeks3, section “Introduction”

A decision table is collapsed when duplicate or impossible cases are removed. In this decision table, there are two duplicate cases: column 2 and column 4 have the same actions (A1 and A2), and column 5 and column 6 have the same action (A1). There are also two impossible cases: column 7 and column 8 have no actions, which means that there is no outcome for these combinations of conditions. Therefore, after collapsing the decision table, only two cases are left: column 1 and column 3, which have different actions (A1 and A2 for column 1, and A1 for column 3). References =

• ISTQB Certified Tester Advanced Level Syllabus Technical Test Analyst1, page 2
• Decision Table-Based Testing2, section “Don’t Care Entries and Rule Counts”
• A Guide on Building Decision Tables3, section “How to ensure that the Table is Complete?”

State transition testing is a technique that tests the behaviour of a system or component based on its transitions between states in response to events. It is suitable for testing systems that have complex interactions and dependencies, such as a car navigation system that needs to integrate with other car software components. State transition testing can verify the functional correctness of the system by checking if it responds correctly to different inputs and events, and if it reaches the expected states and outputs. References = ISTQB Certified Tester Advanced Level Syllabus Technical Test Analyst, page 54, section 4.2.2.2.