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Which of the following statements describes a key principle of software testing?
A key principle of software testing is that it is usually impossible to test all possible input and output combinations for a software system. This principle, highlighted in the ISTQB CTFL Syllabus, acknowledges the practical limitations of testing. Instead, risk-based testing and prioritization techniques are employed to focus on the most critical areas. This approach ensures effective and efficient testing without attempting the infeasible task of exhaustive testing.
Which of the following risks represents the highest level of risk to the project?
When evaluating risks, both the likelihood of failure and the potential cost of impact must be considered. The risk with the highest level is determined by the product of these two factors. In this case, a 10% likelihood of failure with a potential cost of impact of $500,000 results in a higher risk (expected impact) compared to the other options. The expected impact is calculated as likelihood multiplied by impact, which is higher for option B.
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An input field takes the year of birth between 1900 and 2004. The boundary values for testing this field are:
Boundary value analysis focuses on the values at the edges of equivalence partitions. For an input range of 1900 to 2004, the boundary values are just inside and just outside the range:
Just inside: 1900, 2004
Just outside: 1899, 2005
Therefore, the boundary values are 1899, 1900, 2004, and 2005. Reference: ISTQB CTFL Syllabus V4.0, Section 4.2.1.
What should be the MAIN objective during development testing?
The main objective during development testing is to cause as many failures as possible to identify defects in the software. This proactive approach ensures that defects are discovered and addressed early in the development process, improving the overall quality and reliability of the final product.
Tools like change Man, Clear case are used as..?
Change Man and Clear Case are examples of configuration management tools. These tools are used to manage changes in the software, track revisions, and control the versions of the code and documentation throughout the software development lifecycle. They help ensure that the integrity and consistency of the product are maintained as it evolves. Reference: ISTQB CTFL Syllabus V4.0, Section 5.5.2.
