API REST API Testing 2

Question 1

Which HTTP method is used to fully update an existing resource in REST?

Accepted Answer

PUT

Answer

PUT replaces the entire resource with the provided payload, making it the method for full updates.

Question 2

What is the purpose of query parameters in a REST API URL?

Accepted Answer

Filter or paginate results

Answer

Query parameters, appended after '?', are used to filter, sort, or paginate the data returned by the API.

Question 3

Which status code range represents client-side errors in REST API responses?

Accepted Answer

4xx

Answer

The 4xx range covers client errors, such as 400 Bad Request, 401 Unauthorized, and 404 Not Found.

Question 4

What header should a REST API client set when sending a JSON body?

Accepted Answer

Content-Type: application/json

Answer

Content-Type: application/json tells the server that the request body is formatted as JSON.

Question 5

What does it mean for a REST API to be 'stateless'?

Accepted Answer

Each request contains all information needed to process it

Answer

Statelessness means every HTTP request must carry all context needed; the server retains no client session state between calls.

API - Testing Practice Test