Multiple choice technology web technology

What kind of change can be made to a Web Services Description Language (WSDL) document without breaking an existing requestor?

  1. Adding new XML Schema types

  2. Changing the parameters of an operation, in data type or order

  3. Renaming an operation

  4. Changing the structure of a complex data type

  5. None of the above
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A Correct answer
Explanation

Adding new XML Schema types is backward compatible because existing requestors don't reference or need these new types. Changing parameters (B), renaming operations (C), or changing complex data type structures (D) all break existing requestors that depend on the current definitions. WSDL is designed for extensibility through additions.

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