Which snippet correctly represents the JSON schema validation invocation?

• A. <json:validate-schema schema=\"\"/>
• B. <json:validate-schema schema=\"fstab.json\"/>
• C. <xml:validate-schema schema=\"\"/>
• D. <json:validate-schema schemas=\"fstab.json\"/>

Answer: (A)

This question tests recognizing how to invoke JSON schema validation in a Mule flow. The valid invocation uses the JSON module’s validate-schema element from the json namespace, because that's the component name dedicated to validating JSON payloads against a schema. Among the options, the snippet that uses the json namespace with the validate-schema element and the correct attribute name schema is the one that matches this invocation pattern. The other choices are off because they either use the wrong namespace (xml instead of json) or they use the wrong attribute name (schemas instead of schema). The empty value for the schema attribute in this snippet still reflects the proper structure of the invocation—the actual schema can be supplied by reference elsewhere or configured at runtime, but the essential command to perform validation is correctly represented by this snippet.