22/June/2021 | 10 minutes to read
testing
Here is a List of essential API Testing Interview Questions and Answers for Freshers and mid level of Experienced Professionals. All answers for these API Testing questions are explained in a simple and easiest way. These basic, advanced and latest API Testing questions will help you to clear your next Job interview.
These interview questions are targeted for API Testing. You must know the answers of these frequently asked API Testing interview questions to clear the interview. For API Testing you should have some programming knowledge.
1. What is API?
API stands for Application Programming Interface which is a connection between computer programs or systems. API is a software interface that allows softwares to connect to each other. For example, When you browse Facebook then your browser makes calls to Facebook APIs to access the data. For more visit API.
2. What is API testing?
API Testing is a type of software testing which tests APIs for the correctness of functionality, performance, security and reliability. API testing is considered critical as APIs are primary interface to application logic. API testing is performed directly and in parts during integration testing. For more visit API Testing.
3. Does API testing require programming knowledge?
Yes, API Testing requires good knowledge of programming and coding.
4. Explain different HTTP status codes.
5. Explain the OOPs concept.
API testing requires some programming or coding knowledge and If you are using any Object Oriented Programming then you should have knowledge of OOPs concepts. OOPs concepts include object, class, methods, encapsulation, inheritance, Polymorphism, Abstraction and many more. We have written a separate article on OOPs concepts interview questions. For more visit OOPs Concept.
6. What are the types of web services?
7. Explain RESTful services.
8. What is the communication medium in REST API?
9. What are the different HTTP verbs?
10. Explain compile-time and run-time polymorphism.
11. What is JSON?
12. What is the difference between object and object reference?
13. Explain method over-riding.
14. Explain different API testing tools.
15. What are the steps for API testing?
1. How much will you rate yourself in API Testing?
When you attend an interview, Interviewer may ask you to rate yourself in a specific Technology like API Testing, So It's depend on your knowledge and work experience in API Testing. The interviewer expects a realistic self-evaluation aligned with your qualifications.
2. What challenges did you face while working on API Testing?
The challenges faced while working on API Testing projects are highly dependent on one's specific work experience and the technology involved. You should explain any relevant challenges you encountered related to API Testing during your previous projects.
3. What was your role in the last Project related to API Testing?
This question is commonly asked in interviews to understand your specific responsibilities and the functionalities you implemented using API Testing in your previous projects. Your answer should highlight your role, the tasks you were assigned, and the API Testing features or techniques you utilized to accomplish those tasks.
4. How much experience do you have in API Testing?
Here you can tell about your overall work experience on API Testing.
5. Have you done any API Testing Certification or Training?
Whether a candidate has completed any API Testing certification or training is optional. While certifications and training are not essential requirements, they can be advantageous to have.
We have covered some frequently asked API Testing Interview Questions and Answers to help you for your Interview. All these Essential API Testing Interview Questions are targeted for mid level of experienced Professionals and freshers.
While attending any API Testing Interview if you face any difficulty to answer any question please write to us at info@qfles.com. Our IT Expert team will find the best answer and will update on the portal. In case we find any new API Testing questions, we will update the same here.