Question: What is the primary purpose of the Nnef_PFDManagement_Notify service operation in the 5G System (5GS)?
Option 1: To request PFDs from the NF Producer for a specific Application Identifier.
Option 2: To provide updated PFDs for an Application Identifier to the NF Consumer.
Option 3: To delete existing PFDs associated with an Application Identifier.
Option 4: To retrieve the list of supported Application Identifiers from the NF Producer.
Explanation: The Nnef_PFDManagement_Notify service operation is used to provide updated PFDs (Packet Flow Descriptions) for a specific Application Identifier to the NF Consumer, as indicated by the "Outputs" section being empty and the "Description" stating it provides updates. This operation enables the NF Consumer to stay informed about changes to the PFDs associated with an Application Identifier, which is crucial for proper traffic handling in the 5G network.