Which protocol uses XML to transfer data and is simpler and lighter than SOAP?

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Multiple Choice

Which protocol uses XML to transfer data and is simpler and lighter than SOAP?

Explanation:
XML-RPC fits this because it uses XML to encode remote procedure calls and is designed to be simple and lightweight. It typically runs over HTTP and employs a minimal XML structure (methodCall with a methodName and parameters, and a corresponding methodResponse). In contrast, SOAP wraps messages in a full envelope with headers and a broader set of standards, making it heavier. REST is an architectural style, not a protocol, and while it can use XML, it isn’t defined by a single lightweight encoding. JSON-RPC uses JSON, not XML. So the XML-based, lean approach described is XML-RPC.

XML-RPC fits this because it uses XML to encode remote procedure calls and is designed to be simple and lightweight. It typically runs over HTTP and employs a minimal XML structure (methodCall with a methodName and parameters, and a corresponding methodResponse). In contrast, SOAP wraps messages in a full envelope with headers and a broader set of standards, making it heavier. REST is an architectural style, not a protocol, and while it can use XML, it isn’t defined by a single lightweight encoding. JSON-RPC uses JSON, not XML. So the XML-based, lean approach described is XML-RPC.

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