ISTQB CTFL-Foundation Based on Real Exam Environment

Testing should be stopped based on risk criteria defined for the system being tested. The ISTQB CTFL syllabus v4.0 outlines that the decision to stop testing is influenced by risk levels, coverage achieved, time and budget constraints, and the criticality of the system under test. Stopping criteria should ensure that the risk of remaining defects is acceptable for the project stakeholders​​.

The main purpose of the component build and integration strategy is to specify which components to combine when, and how many at once. This strategy helps manage the complexity of integrating different parts of the system by providing a structured approach to combining components incrementally. It ensures that integration is done systematically, reducing the risk of integration issues and making it easier to identify and resolve problems as they arise​​.

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The highest level of risk is calculated by considering both the likelihood of failure and the impact value. Risk can be quantified as the product of these two factors:

A: 20% * £100,000 = £20,000

B: 10% * £150,000 = £15,000

C: 1% * £500,000 = £5,000

D: 2% * £200,000 = £4,000

Therefore, Option A (20% likelihood of failure and £100,000 impact value) represents the highest risk value. Reference: ISTQB CTFL Syllabus V4.0, Section 5.2.3 .

Non-functional testing is focused on testing the attributes of a system such as usability, reliability, maintainability, performance, and security. These attributes define how the system operates rather than what the system does. Non-functional testing ensures that the software meets certain criteria that are critical to its operational performance and user satisfaction​​.