In API testing, which of the following is checked for accuracy?

• A. HTTP status codes
• B. User interface elements
• C. Memory consumption
• D. User authorization levels

Answer: (A)

In API testing, checking HTTP status codes for accuracy is crucial because they provide immediate feedback on the outcome of a request. Each HTTP status code corresponds to a specific response scenario, such as success, redirection, client error, or server error. For instance, a 200 status code indicates a successful request, while a 404 code denotes that the requested resource could not be found.

Verifying these codes helps ensure that the API behaves as expected under various conditions and that it communicates the correct response to the client. Accurate status codes confirm that the API is functioning properly and adhere to HTTP standards, which is essential for building reliable and user-friendly applications.

While other options may involve considerations in a broader testing strategy, such as memory consumption which pertains more to performance testing, and user interface elements, which are related to GUI testing, they do not directly relate to the specific correctness checks performed within API testing. User authorization levels also pertain to security aspects but do not specifically measure the accuracy of API responses in the same immediate, standardized way that HTTP status codes do.