問題文
A retailer's Mule application contains one flow. The flow has an HTTP Listener, a single Database Select operation against the warehouse inventory schema, and a Transform Message that renames the columns to a stable JSON shape. No other system is called. In an API-led connectivity design, which layer does this flow implement?
選択肢
- The System layer, because the flow unlocks data from a single system of record and publishes it in a stable format without adding business logic.
- The Process layer, because a Transform Message is present.
- The Experience layer, because the output is JSON and JSON is the format that web and mobile clients consume most often, so the representation would settle the layer.
- None of the three layers, because a flow that contains only one connector operation is considered a utility flow and is placed outside the layered model entirely, so it should be moved into the calling application as a subflow instead.