Question: In a 5G System, when an Application Function (AF) receives an Access and Mobility (AM) policy event notification from the Network Exposure Function (NEF), how is the AF expected to respond to confirm receipt of the notification?
Option 1: By sending an HTTP GET request to the NEF for further details
Option 2: With a '204 No Content' status code in response to the NEF's HTTP POST message
Option 3: By initiating a new network session via the Session Management Function (SMF)
Option 4: Through a direct notification to the Policy Control Function (PCF) acknowledging the event
Explanation: The correct response for an AF to confirm receipt of an AM policy event notification from the NEF is by returning a '204 No Content' status code. This HTTP response indicates that the server has successfully fulfilled the request, but there is no additional content to return, which in this context means the notification has been received and acknowledged without needing to provide additional information back to the NEF.