Free Practice Questions for ISTQB CTFL-Foundation Exam

Valid test objectives include finding defects (i), gaining confidence about the level of quality and providing information (ii), and preventing defects (iii). Debugging the code (iv) is not a valid test objective as it is a part of the development process rather than the testing process.

The failure rate in testing already completed is a useful metric to monitor progress along with test preparation and execution. It provides insight into the effectiveness of the tests and the quality of the product, helping to identify areas that may require additional attention or resources.

In formal reviews, such as inspections, the role of the moderator is crucial. The moderator is responsible for leading the review process, ensuring that the review is conducted according to the defined procedures, and facilitating the review meeting. The ISTQB syllabus highlights that the moderator's role is to guide the review team, manage any issues that arise during the review, and ensure that the objectives of the review are met​​.

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​​.

To verify the non-functional requirements such as the support for a minimum number of enquiries per hour, availability, and response time during peak loads, the most appropriate set of test types would include Performance Testing to assess the responsiveness and stability, Load Testing to verify the system's ability to handle expected user loads, and Stress Testing to determine the system's behavior under extreme conditions. These tests collectively ensure that the system meets the specified non-functional criteria.

One limitation of static analysis tools is that they tend to generate a large number of warning messages when applied to new code. This can occur even if the code meets established coding standards, as the tools are designed to identify a wide range of potential issues, leading to a high volume of output that needs to be reviewed and addressed.

Use-case testing involves scenarios based on the use cases of a system. In a use-case diagram, an actor represents a type of user (i). A use-case describes interactions between actors and the system (iii). Test cases can be based on use-case scenarios (v), and use-case testing often identifies gaps not found by testing individual components (vi). However, an actor is not always a human user (iv), and use-cases are not the most common test basis for unit testing (ii).

Test planning involves defining the overall approach to testing, including setting objectives, strategies, and resources. It ensures that the level of detail in test procedures is appropriate for the subsequent test execution phase. Effective test planning helps in aligning the testing activities with the project goals and ensures that the tests are executed as per the defined procedures.

In state transition testing, test cases are designed to execute specific sequences of state transitions. Referring to the provided state transition diagram:

For test case (i) X-Z-V-W, the corresponding state transitions are S1 (X) → S2, S2 (Z) → S3, S3 (V) → S4, and S4 (W) → S2. Therefore, the sequence of state transitions is S1 – S2 – S3 – S4 – S2.

For test case (ii) W-Y-U-U, the corresponding state transitions are S4 (W) → S2, S2 (Y) → S4, S4 (U) → S4, and S4 (U) → S4. Therefore, the sequence of state transitions is S4 – S2 – S4 – S4 – S4.

This ensures that the transitions accurately reflect the states and paths described in the test cases.

System testing is a level of software testing where a complete and integrated software is tested. The purpose of this test is to evaluate the system's compliance with the specified requirements. System testing is conducted on the entire system to verify that it behaves as expected and meets the functional and non-functional requirements defined in the scope of the project.