During test execution, a test analyst observes that a specific test case fails intermittently, but the failure cannot be reproduced consistently. The test case involves a complex workflow with multiple data inputs. What is the most effective approach to analyze the test results to identify the root cause?

Review the test logs and compare the data inputs and system state between passes and failures

Mark the test case as 'blocked' and move on to other tests

Increase the timeout for the test case to allow more time for execution

Run the test case repeatedly until it fails consistently

A test analyst is analyzing the results of a test cycle and finds that the number of defects found in the 'user profile' module is significantly higher than in other modules. The test cases for this module were designed using equivalence partitioning and boundary value analysis. What should the test analyst do to improve defect detection?

Reduce the number of test cases for this module to save time

Add more test cases using the same techniques to increase coverage

Ask developers to review the code for the user profile module

Analyze the defects to identify common themes and adjust test design accordingly

A test analyst is analyzing test results from a regression test cycle. The results show that a cluster of test cases failed, all related to the same module. The failures occurred after a code change was deployed. What is the most likely root cause of these failures?

The test cases were not updated to reflect the new requirements

The test environment was not properly configured

The code change introduced a regression in that module

After executing a set of test cases, a test analyst observes that several defects are all traced back to incorrect handling of null values in different functions. What does this observation primarily indicate?

The test environment is not configured correctly for null value testing.

The defects are unrelated and should be handled individually without further analysis.

The test cases were poorly designed and need to be rewritten.

There is a common root cause, such as a shared utility or coding standard issue, affecting null handling.

A test analyst notices that defects found during exploratory testing are often not captured in the test management tool, leading to incomplete defect analysis. What should the test analyst do to improve the analysis of test results?

Stop exploratory testing and rely only on scripted tests

Ask developers to report defects found during code reviews

Ensure that all exploratory testing sessions include a debriefing where defects are logged

Increase the number of scripted test cases to compensate

Certified Tester Advanced Level Test Analyst

Domain 5Objective 4

Analyzing Test Results to Improve Defect Detection CTAL-TA Practice Questions (Page 1)

Part of the Software Defect Prevention domain, which makes up ~29% of our current practice bank. ISTQB does not publish an official question count, but from its 120-minute exam (~50–80 total, ~15–23 in this domain), expect 3–5 from this objective — we provide 13 practice questions to prepare you well beyond it. (estimate)

13questions here

3free pages

2concepts

Questions 1–5

1application · medium
During test execution, a test analyst observes that a specific test case fails intermittently, but the failure cannot be reproduced consistently. The test case involves a complex workflow with multiple data inputs. What is the most effective approach to analyze the test results to identify the root cause?
Select an answer first
2application · medium
A test analyst is analyzing the results of a test cycle and finds that the number of defects found in the 'user profile' module is significantly higher than in other modules. The test cases for this module were designed using equivalence partitioning and boundary value analysis. What should the test analyst do to improve defect detection?
Select an answer first
3application · medium
A test analyst is analyzing test results from a regression test cycle. The results show that a cluster of test cases failed, all related to the same module. The failures occurred after a code change was deployed. What is the most likely root cause of these failures?
Select an answer first
4foundation · easy
After executing a set of test cases, a test analyst observes that several defects are all traced back to incorrect handling of null values in different functions. What does this observation primarily indicate?
Select an answer first
5application · medium
A test analyst notices that defects found during exploratory testing are often not captured in the test management tool, leading to incomplete defect analysis. What should the test analyst do to improve the analysis of test results?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to CTAL-TA

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by ISTQB. “CTAL-TA” is a trademark of its owner, used for identification only.

Analyzing Test Results to Improve Defect Detection CTAL-TA Practice Questions (Page 1)

Questions 1–5

A test analyst is analyzing test results from a regression test cycle. The results show that a cluster of test cases failed, all related to the same module. The failures occurred after a code change was deployed. What is the most likely root cause of these failures?

After executing a set of test cases, a test analyst observes that several defects are all traced back to incorrect handling of null values in different functions. What does this observation primarily indicate?

A test analyst notices that defects found during exploratory testing are often not captured in the test management tool, leading to incomplete defect analysis. What should the test analyst do to improve the analysis of test results?

Keep studying — Software Defect Prevention