Pass the ISTQB Foundation Level CTFL-Foundation Questions and answers with ExamsMirror

Non-functional system testing evaluates various quality attributes of a system rather than specific behaviors or functionalities. According to the ISTQB CTFL Syllabus, version 4.0, non-functional testing encompasses several critical aspects:

Performance testingevaluates how the system performs under different conditions, such as load and stress, to ensure it meets performance requirements.

Usability testingassesses the user-friendliness and overall user experience of the system, ensuring that it is intuitive and accessible for end-users.

The syllabus outlines that non-functional system testing includes testing the quality attributes of the system, which goes beyond just functionality and delves into performance, usability, reliability, and other key attributes​​.

During the test analysis and design stage, test management tools and requirements management tools are most useful. Test management tools help in organizing and managing the testing activities, including planning, tracking, and reporting test progress. Requirements management tools assist in ensuring that the test cases are aligned with the requirements, thereby improving traceability and coverage. These tools support the efficient design and management of tests. Reference: ISTQB CTFL Syllabus V4.0, Section 5.1.2​​.

The responsibility of conducting a test readiness review typically falls to the Test Manager. The Test Manager ensures that all necessary preparations for testing have been completed and that the testing environment, resources, and schedule are ready for the test execution phase. This role involves coordinating with different stakeholders to confirm that the testing process can proceed smoothly​​.

The three decisions are in sequence and the conditions are all mutually exclusive (if any one is true the others must be false). Hence a test case that makes the first decision true will make the second and third decisions false and so on.

So test case 1 (say Time = 6) would exercise the path True, False, False, test case 2 (say Time = 15) would exercise the path False, True, False. Test case 3 would have to be Time = 12. This combination achieves 100 per cent decision coverage because each decision has been exercised through its true and its false outcomes.

Maintenance testing is typically triggered by changes to the operational system, such as data migration, system modification, or system retirement. These triggers require testing to ensure that the changes do not negatively impact the existing functionality. However, the introduction of a test management tool does not directly affect the operational system and is not considered a trigger for maintenance testing​​.

Writing test summary reports is typically the responsibility of a test leader or manager, who consolidates testing activities and results to communicate with stakeholders. Testers are more involved in preparing and acquiring test data, setting up and checking the test environment, and reviewing tests developed by others. These tasks are more hands-on and technical, aligning with the role of a tester​​ .

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Equivalence partitioning is a black-box test design technique that divides input data into partitions that are expected to be treated similarly by the system. In this case, 0600 falls into the peak-time tariff, 1000 is at the boundary of peak-time but still included in it, and 1200 falls into the off-peak tariff. This ensures that each input is from a different equivalence partition, testing different functional areas of the system​​.

Exploratory testing is highly effective when under severe time pressure because it allows testers to simultaneously learn, design, and execute tests. It is a flexible approach that does not require extensive preparation and documentation, making it ideal for situations where time is limited​​.

Load testing is a type of non-functional testing used to verify that the system can handle a specified load of users performing transactions within acceptable performance parameters. In this case, load testing would ensure that up to 100 users can carry out transactions simultaneously with response times within 5 seconds. This testing helps identify performance bottlenecks and ensure that the system meets the performance requirements under expected user load conditions​​.

A dynamic analysis tool would have been the most effective at detecting a defect where a code component fails to release memory after use. These tools analyze the behavior of the software while it is running, allowing them to identify issues like memory leaks, which occur when memory is not properly freed. Dynamic analysis tools can monitor the allocation and deallocation of memory in real-time, helping to pinpoint the exact location and cause of the memory leak before the software is deployed​​ .