To read existing data via an API, which HTTP method is used?

To read existing data via an API, which HTTP method is used?

• A. POST
• B. PUT
• C. PATCH
• D. GET

Answer: (D)

Reading existing data from an API is done with the HTTP GET method because it’s designed to retrieve a resource without changing it. GET is safe and idempotent, meaning calling it multiple times won’t have side effects on the server. This makes it ideal for read operations, and the response is typically cacheable, improving performance for repeated data access. You usually specify what you want by including identifiers in the URL, such as a resource path or query parameters, rather than sending data to be created or updated. In contrast, methods like POST are used to create new resources or trigger actions, PUT replaces or creates a resource at a specific URL, and PATCH applies partial updates to an existing resource. Since the goal here is just to read data, GET is the best fit.

Reading existing data from an API is done with the HTTP GET method because it’s designed to retrieve a resource without changing it. GET is safe and idempotent, meaning calling it multiple times won’t have side effects on the server. This makes it ideal for read operations, and the response is typically cacheable, improving performance for repeated data access. You usually specify what you want by including identifiers in the URL, such as a resource path or query parameters, rather than sending data to be created or updated.

In contrast, methods like POST are used to create new resources or trigger actions, PUT replaces or creates a resource at a specific URL, and PATCH applies partial updates to an existing resource. Since the goal here is just to read data, GET is the best fit.