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What is API Testing?
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What are the differences between API testing and UI testing?
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What are the common types of APIs?
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What are the most commonly used protocols in API testing?
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Explain the components of an HTTP request.
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What is the difference between PUT and POST methods?
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What is the difference between SOAP and REST APIs?
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What is a RESTful Web Service?
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What are HTTP status codes? Give examples.
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What does a 200 OK status code mean?
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What does a 404 status code indicate?
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What is the difference between 401 and 403 status codes?
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What is a payload in API?
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What is the difference between request and response in an API call?
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What is an endpoint in an API?
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What is an API key and why is it used?
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What is OAuth?
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What is JWT (JSON Web Token)?
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What is a URI and how is it different from a URL?
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Explain what an idempotent method is in REST APIs.
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What tools are commonly used for API testing?
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What is Postman and how is it used?
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What is SoapUI used for?
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How do you validate response data in Postman?
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What is Newman in Postman?
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What is REST Assured and how is it used in API testing?
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What is Swagger and how does it help in API testing?
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What are the advantages of using automated API testing tools?
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What is JMeter and can it be used for API testing?
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Can Selenium be used for API testing?
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What is the difference between GET and POST?
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What is the DELETE method used for?
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What are HTTP headers? Name a few commonly used ones.
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What is a Content-Type header?
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What is an Authorization header?
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What is Accept header in an API request?
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Can GET requests have a body?
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What are custom headers?
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What are path parameters vs query parameters?
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How do you pass authentication credentials in a request?
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What is response time in API testing?
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How do you validate a JSON response?
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How do you verify status codes?
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How do you handle response assertions?
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What is JSON Schema validation?
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How do you test XML responses?
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How can you test the performance of an API?
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What is throttling and rate-limiting in APIs?
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How do you verify headers in API response?
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What is caching in REST APIs?
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How do you write test cases for an API?
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What negative test cases can be written for API testing?
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How do you test API error handling?
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What are boundary test cases in API testing?
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How do you test APIs with large payloads?
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How do you test file upload via API?
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How do you handle dynamic data in API testing?
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How do you ensure backward compatibility in APIs?
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How do you test for API security?
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How do you handle data validation in API testing?
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What are the benefits of automating API tests?
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How do you perform data-driven testing in Postman?
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What is the use of pre-request scripts in Postman?
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What is the purpose of test scripts in Postman?
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How do you use variables and environments in Postman?
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How do you chain requests in Postman?
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How do you integrate Postman tests with CI/CD?
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What is a Collection Runner?
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How do you log request and response in automation?
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How do you handle authentication in automated API tests?
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How do you test third-party APIs?
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What would you do if the API you are testing is not documented?
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How do you test an API with rate limits?
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What will you do if an API call gives a 500 error?
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How do you mock an API request?
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What is the purpose of stubs and mocks?
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How do you ensure consistency in test data?
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How would you test an API that supports multiple languages?
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How do you test APIs that depend on real-time data?
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What to test when API has pagination?
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What is GraphQL and how is it different from REST?
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What is API versioning and how do you test it?
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How do you test asynchronous APIs?
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What is contract testing in APIs?
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What is API virtualization?
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What is HATEOAS in REST APIs?
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What are microservices and how is API testing relevant?
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How do you test WebSockets?
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What is the difference between integration testing and API testing?
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What is the difference between functional and non-functional API testing?
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How do you handle flaky API tests?
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How do you debug failed API tests?
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What is the role of logs in API testing?
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What would you do if a dependent service is down?
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How do you ensure APIs are up and running in production?
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How do you handle timeout errors?
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How to check memory leaks in API response?
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What to do when API response structure changes?
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How to monitor API health?
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What metrics are important in API testing?
API Manual
