A team is working on a microservices architecture. A change is made to one service, but the team is unsure which other services are affected because of inter-service communication. The regression suite is large and takes a long time to run. What is the most effective way to select regression tests?

Use contract tests and trace the dependencies to identify affected services and their tests.

Run only the tests for the changed service.

Run a random subset of tests from each service.

Run the full regression suite to be safe.

A team has automated their regression tests, but the tests are not integrated into the CI pipeline. As a result, regression tests are run manually before each release, which is time-consuming and error-prone. What is the best improvement?

Integrate the regression tests into the CI pipeline so they run automatically on every commit.

Keep the manual process but create a detailed checklist to avoid errors.

Hire more testers to run the regression tests manually.

Run the regression tests only on release candidates.

A team has a large regression suite that has grown over time. Many tests are redundant or outdated. The team wants to streamline the suite to reduce maintenance effort and execution time. What is the most effective approach?

Automatically delete any test that has not failed in the last six months.

Keep the suite as is to avoid introducing risks.

Reduce the suite by combining multiple tests into one large test.

Conduct a thorough review of the suite, removing redundant tests and updating outdated ones.

A team has an automated regression suite that includes tests for a feature that has been deprecated and removed from the application. What should the team do with the tests for that feature?

Remove the tests from the suite because the feature no longer exists.

Keep the tests in the suite to ensure the feature does not reappear.

Disable the tests but keep them in the codebase for future reference.

Modify the tests to test a different feature.

In regression test prioritization, what is the main objective?

To order tests so that faults are detected as early as possible

To ensure every test runs at least once

To group tests by the feature they test

To run tests in the order they were written

Certified Tester Advanced Level Agile Tester

Domain 1Objective 4

Regression Test Approaches CTAL-AT Practice Questions (Page 4)

Part of the Test Strategy and Test Approach Challenges domain, which makes up ~20% of our current practice bank. ISTQB does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–12 in this domain), expect 2–3 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

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Questions 16–20

16expert · hard
A team is working on a microservices architecture. A change is made to one service, but the team is unsure which other services are affected because of inter-service communication. The regression suite is large and takes a long time to run. What is the most effective way to select regression tests?
Select an answer first
17application · medium
A team has automated their regression tests, but the tests are not integrated into the CI pipeline. As a result, regression tests are run manually before each release, which is time-consuming and error-prone. What is the best improvement?
Select an answer first
18expert · hard
A team has a large regression suite that has grown over time. Many tests are redundant or outdated. The team wants to streamline the suite to reduce maintenance effort and execution time. What is the most effective approach?
Select an answer first
19application · medium
A team has an automated regression suite that includes tests for a feature that has been deprecated and removed from the application. What should the team do with the tests for that feature?
Select an answer first
20foundation · easy
In regression test prioritization, what is the main objective?
Select an answer first

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