A team is working on a project with frequent releases. They want to ensure that API changes do not break existing consumers. They plan to add automated tests to the CI pipeline. What is the most effective way to achieve this?

Run contract tests only before a major release.

Run contract tests in the CI pipeline on every pull request.

Run performance tests in the CI pipeline instead.

Run UI tests to ensure the API works with the frontend.

What does API testing primarily validate that UI testing cannot?

The exact data format and structure of responses, such as JSON schemas and field types

The usability and accessibility of the user interface

The visual layout and styling of the application

The performance of the end-user's network connection

What is the primary purpose of API testing in a DevOps pipeline?

To test only the performance of the database queries used by the application

To validate the behavior and data exchange of services directly, without relying on a graphical user interface

To replace all unit tests with end-to-end tests that simulate a user clicking through the application

To verify that the front-end code correctly renders all API responses

Certified Tester Quality in DevOps

Domain 3Objective 3

API Testing CT-QDO Practice Questions (Page 1)

Part of the Domain 3: Automated and Manual Tasks in DevOps domain, which makes up ~21% of our current practice bank. ISTQB does not publish an official question count, but from its 60-minute exam (~25–40 total, ~5–8 in this domain), expect 1–2 from this objective — we provide 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

6concepts

Questions 1–5

1application · medium
A team is working on a project with frequent releases. They want to ensure that API changes do not break existing consumers. They plan to add automated tests to the CI pipeline. What is the most effective way to achieve this?
Select an answer first
2foundation · easy
What does API testing primarily validate that UI testing cannot?
Select an answer first
3foundation · easy
Which of the following is a common tool used for automated API testing?
Select an answer first
4foundation · easy
Which type of API testing is specifically designed to evaluate the system's behavior under high load conditions?
Select an answer first
5foundation · easy
What is the primary purpose of API testing in a DevOps pipeline?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to CT-QDO

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. “CT-QDO” is a trademark of its owner, used for identification only.

API Testing CT-QDO Practice Questions (Page 1)

Questions 1–5

A team is working on a project with frequent releases. They want to ensure that API changes do not break existing consumers. They plan to add automated tests to the CI pipeline. What is the most effective way to achieve this?

What does API testing primarily validate that UI testing cannot?

Which of the following is a common tool used for automated API testing?

Which type of API testing is specifically designed to evaluate the system's behavior under high load conditions?

What is the primary purpose of API testing in a DevOps pipeline?

Keep studying — Domain 3: Automated and Manual Tasks in DevOps