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| Section | Weight | Objectives |
|---|---|---|
| Testing Throughout the Software Development Lifecycle | 15% | - Test levels - Testing in SDLC contexts - Maintenance testing - Test types |
| Test Analysis and Design | 30% | - Test techniques overview - Black-box test techniques - White-box test techniques - Collaboration-based approaches - Experience-based test techniques |
| Fundamentals of Testing | 20% | - Why testing is necessary - Testing principles - What is testing - Test activities, testware and roles - Essential skills and good practices |
| Static Testing | 10% | - Review process and types - Static testing basics |
| Test Tools and Automation | 2.5% | - Tool support for testing - Benefits and risks of automation |
| Managing Test Activities | 22.5% | - Defect management - Configuration management - Test planning - Risk-based testing - Monitoring, control and completion |
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質問 # 128
Which of the following statements is true?
正解：C
解説：
This answer is correct because in Agile software development, work product documentation, such as user stories, acceptance criteria, or test cases, tends to be lightweight and concise, as the focus is on working software and frequent communication rather than comprehensive documentation. Manual tests tend to be often unscripted, as they are often produced using experience-based test techniques, such as error guessing or exploratory testing, which rely on the tester's skills, knowledge, and creativity to find defects and provide feedback. References: ISTQB Foundation Level Syllabus v4.0, Section 3.1.1.2, Section 3.2.1.2
質問 # 129
Following a risk-based testing approach you have designed 10 tests to cover a product risk with a high-risk level. You want to estimate, adopting the three-point test estimation technique, the test effort required to reduce the risk level to zero by executing those 10 tests. You made the following three initial estimates:
* most optimistic = 6 person hours
* most likely = 30 person hours
* most pessimistic = 54 person hours
Based only on the given information, which of the following answers about the three-point test estimation technique applied to this problem is true?
正解：D
解説：
Explanation
The three-point test estimation technique is a method of estimating the test effort based on three initial estimates: the most optimistic, the most likely, and the most pessimistic. The technique uses a weighted average of these three estimates to calculate the final estimate, which is also known as the expected value. The formula for the expected value is:
Expected value = (most optimistic + 4 * most likely + most pessimistic) / 6 Using the given values, the expected value is:
Expected value = (6 + 4 * 30 + 54) / 6 Expected value = 30 person hours However, the expected value is not the only factor to consider when estimating the test effort. The technique also calculates the standard deviation, which is a measure of the variability or uncertainty of the estimates. The formula for the standard deviation is:
Standard deviation = (most pessimistic - most optimistic) / 6
Using the given values, the standard deviation is:
Standard deviation = (54 - 6) / 6 Standard deviation = 8 person hours
The standard deviation can be used to determine a range of possible values for the test effort, based on a certain level of confidence. For example, using a 68% confidence level, the range is:
Expected value ± standard deviation
Using the calculated values, the range is:
30±8 person hours
Therefore, the final estimate is between 22 person hours and 38 person hours, which is option A.
References: ISTQB Certified Tester Foundation Level Syllabus v4.01, Section 2.3.2, page 24-25; ISTQB Glossary v4.02, page 33.
質問 # 130
Given some statements about independence of testing
i.Independence is a replacement for familiarity with the code
ii.Independence helps remove the biases produced because of own work
iii.Similar kind of failures can be detected by anyone
iv.Assumptions by different people are different revealing weaknesses Which of the following CORRECTLY represents the benefits?
正解：D
解説：
Independence in testing provides several benefits. Firstly, it helps remove the biases that might be introduced by the person who developed the code or created the tests (ii). This is because an independent tester can evaluate the software without being influenced by their prior work. Secondly, different people bring different perspectives and assumptions to the testing process, which can help uncover different types of weaknesses (iv).
References:
* ISTQB CTFL Syllabus V4.0, Section 1.5.3 on the benefits of independence in testing, which emphasizes the reduction of bias and the introduction of diverse viewpoints.
質問 # 131
Which of the following statements refers to good testing practice to be applied regardless of the chosen software development model?
正解：C
解説：
The statement that refers to good testing practice to be applied regardless of the chosen software development model is option D, which says that involvement of testers in work product reviews should occur as early as possible to take advantage of the early testing principle. Work product reviews are static testing techniques, in which the work products of the software development process, such as the requirements, the design, the code, the test cases, etc., are examined by one or more reviewers, with or without the author, to identify defects, violations, or improvements.
Involvement of testers in work product reviews can provide various benefits for the testing process, such as improving the test quality, the test efficiency, and the test communication. The early testing principle states that testing activities should start as early as possible in the software development lifecycle, and should be performed iteratively and continuously throughout the lifecycle. Applying the early testing principle can help to prevent, detect, and remove defects at an early stage, when they are easier, cheaper, and faster to fix, as well as to reduce the risk, the cost, and the time of the testing process.
質問 # 132
Which of the following statements about the shift-left approach is true?
正解：A
解説：
This answer is correct because shift-left in testing is an approach that aims to perform testing activities as early as possible in the software development lifecycle, in order to find and fix defects faster and cheaper, and to improve the quality of the software product. Continuous integration is a practice that supports shift-left in testing, as it involves integrating and testing the software components frequently, usually several times a day, using automated tools and processes. Continuous integration can reduce the time between the introduction of a defect and its detection, thereby reducing the cost to fix it and the risk of accumulating defects that could affect the functionality or performance of the software product. References: ISTQB Foundation Level Syllabus v4.0, Section 3.1.1.3, Section 3.2.1.3
質問 # 133
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