Microsoft Fabric Data Engineer Associate DP-700 Practice Question

In Fabric pipelines (built on Azure Data Factory), an event-based trigger surfaces its event message through the trigger() function. The event payload is available under trigger().outputs.body, where properties such as fileName and folderPath are exposed by OneLake Event Grid events. To build the full relative path to the file, you concatenate the folderPath and fileName values:

@concat(trigger().outputs.body.folderPath, '/', trigger().outputs.body.fileName)

The other options are incorrect:

• Using only trigger().outputs.body.fileName omits the folder path, so the notebook would not receive the full path.
• Using only trigger().outputs.body.folderPath omits the file name.
• pipeline().parameters.input_path references an existing pipeline parameter; it does not extract the dynamic values from the trigger payload.

Therefore, the correct expression is the concatenation of folderPath and fileName from trigger().outputs.body.