API Testing Interview Questions

Last Updated: Nov 10, 2023

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API Testing Interview Questions For Freshers

What is data-driven testing in API testing?

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What are the benefits of API testing?

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What are the different types of API testing?

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What is the difference between SOAP and RESTful APIs?

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What are some common tools used for API testing?

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What is an API contract?

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What is the purpose of API documentation?

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How can you ensure the security of APIs?

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What is endpoint testing in API testing?

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What is request chaining in API testing?

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What is the HTTP status code 200 used for?

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What is the purpose of API test automation?

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What is the role of POST method in API testing?

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What is API testing?

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What is boundary value analysis in API testing?

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What is the purpose of load testing an API?

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What are the steps involved in API testing?

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API Testing Intermediate Interview Questions

What is the role of HTTP methods in API testing?

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What are the key challenges in API testing?

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How can you automate API testing using frameworks?

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Explain the concept of fuzz testing in API testing.

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What is the role of response time in API testing?

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What is contract-driven testing approach in API testing?

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What is the purpose of API versioning and how is it done?

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What is the role of headers in API testing?

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What are the best practices for writing API test cases?

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What is contract-first testing approach in API testing?

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What are the differences between manual and automated API testing?

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Explain the concept of negative testing in API testing.

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What is the role of performance testing in API testing?

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What are the advantages of using API mocking tools?

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How do you handle authentication and authorization in API testing?

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API Testing Interview Questions For Experienced

Explain the concept of data-driven testing using external files in API testing.

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What is service virtualization and how is it used in API testing?

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What are the limitations of API testing?

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Explain the concept of stateful and stateless APIs.

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How do you handle errors and exceptions in API testing?

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What are some strategies for API testing in an Agile environment?

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Explain the concept of performance profiling in API testing.

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What are the differences between positive and negative testing in API testing?

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What is contract-based testing approach in API testing?

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What are some techniques for API security testing?

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What is the role of API gateways in API testing?

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What are the advantages of using test doubles in API testing?

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Explain the concept of integration testing in API testing.

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What are the considerations for testing APIs with third-party dependencies?

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What are the limitations of load testing an API?

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How do you handle rate limiting in API testing?

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What is the role of API version control in API testing?

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What are some strategies for handling timeouts in API testing?

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Explain the concept of API governance in API testing.

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What are the differences between stress testing and load testing in API testing?

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What is the role of error codes in API testing?

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