Which statement about endpoint patterns and processing in Mule is true?

• A. Endpoint with a request response exchange pattern are set to synchronous; endpoint with one-way exchange pattern are set to queued asynchronous
• B. Endpoints ignore exchange patterns
• C. All endpoints are always synchronous
• D. Endpoints with both patterns are always asynchronous

Answer: (A)

The key idea is how the exchange pattern on an endpoint shapes how the processing behaves from the caller’s perspective. A request-response pattern means the inbound call waits for a reply, so it’s synchronous from the caller’s point of view. A one-way pattern means the message is sent and the caller does not wait for a response, often resulting in asynchronous processing (the message can be queued or processed in the background). Because of this, endpoints using request-response are synchronous, while endpoints using one-way are asynchronous. The other statements don’t match how exchange patterns actually work: endpoints don’t ignore exchange patterns, not all endpoints are inherently synchronous, and an endpoint isn’t defined to be both patterns at once.