Which choice is NOT an HTTP method supported by REST clients?

• A. PUT
• B. POST
• C. GET
• D. PUSH

Answer: (D)

The choice of "PUSH" is not a standard HTTP method recognized within the context of RESTful services. REST clients typically utilize methods that conform to the HTTP specification, which includes PUT, POST, and GET among others, for performing operations on resources.

• PUT is used to update an existing resource or create a new resource at a specified URI.

• POST is primarily used to create a new resource in the server, usually under the provided URI.

• GET is utilized for retrieving data from a specified resource without making any modifications to it.

In contrast, "PUSH" is not part of the HTTP methods outlined in the standard. While some frameworks or protocols might use similar terminology (for instance, in WebSocket or certain APIs), it does not form part of the designated HTTP methods that REST clients leverage. This distinction is key to understanding how RESTful services interact and communicate over the web.