ISTQB Advanced Level 3 — Questions and Answers
Question 1: Which test monitoring metric measures the rate at which the project is finding and resolving defects over time?
- Defect density
- Defect burn-down (Correct answer)
- Test pass rate
- Mean time to detect
Correct answer: Defect burn-down
Defect burn-down tracks the trend of open versus resolved defects over time, indicating whether the project is converging toward quality goals.
Question 2: A test lead notices that the same module repeatedly has high defect counts. What is the MOST appropriate response?
- Reduce testing on that module since it is well-exercised
- Increase test coverage and investigate root causes in that module (Correct answer)
- Request that the module be rewritten from scratch immediately
- Move all defects to a separate backlog for future sprints
Correct answer: Increase test coverage and investigate root causes in that module
Defect clustering indicates a high-risk area; testers should increase coverage and work with developers to identify and address the underlying root causes.
Question 3: In the ISTQB Advanced Level Test Manager syllabus, what is the purpose of a product risk analysis?
- To replace functional testing with risk-based regression only
- To identify what could go wrong with the product and use that to guide test prioritization (Correct answer)
- To document which features carry legal liability for the vendor
- To allocate defect budgets across teams
Correct answer: To identify what could go wrong with the product and use that to guide test prioritization
Product risk analysis identifies potential failure modes in the system under test and uses them to focus testing where the consequences of failure are greatest.
Question 4: Which statement best describes the role of an experienced tester in a structured walkthrough?
- Acts as the sole decision-maker on whether defects are valid
- Participates as a reviewer providing feedback to the author (Correct answer)
- Writes the test cases that will be reviewed
- Approves the artifact for release to production
Correct answer: Participates as a reviewer providing feedback to the author
In a structured walkthrough the author presents the work while other reviewers, including experienced testers, provide feedback and identify defects.
Question 5: When applying equivalence partitioning, how should invalid partitions be handled?
- Ignored, since only valid inputs need testing
- Tested with one representative value per invalid partition (Correct answer)
- Combined into a single 'invalid' test case to save time
- Treated identically to valid partitions in all respects
Correct answer: Tested with one representative value per invalid partition
Each invalid partition should be tested with at least one representative value to confirm the system correctly rejects or handles erroneous inputs.
Question 6: What is the primary objective of regression testing in a continuous integration pipeline?
- To discover new features introduced by the development team
- To ensure that recent changes have not broken previously working functionality (Correct answer)
- To replace system testing in agile projects
- To validate acceptance criteria defined by the product owner
Correct answer: To ensure that recent changes have not broken previously working functionality
Regression testing confirms that code changes, bug fixes, or new features have not adversely affected existing working functionality.
Question 7: Which factor is MOST important when deciding the level of test independence required for a project?
- The programming language used by the development team
- The risk level and criticality of the system under test (Correct answer)
- The number of testers available on the project
- The release schedule and deadline pressure
Correct answer: The risk level and criticality of the system under test
Higher system criticality and risk justify greater test independence to reduce confirmation bias and increase the likelihood of finding serious defects.
ISTQB Advanced Level 3
Which test monitoring metric measures the rate at which the project is finding and resolving defects over time?