Question: Upon receiving an HTTP DELETE request from an Application Function (AF) to delete a subscription for Individual 5GLAN Parameters Provision, what action does the Network Exposure Function (NEF) take if the AF is authorized and the Unified Data Management (UDM) accepts the deletion request?
Option 1: The NEF sends an HTTP '404 Not Found' response and retains the subscription.
Option 2: The NEF deletes the existing subscription and sends an HTTP '204 No Content' response to the AF.
Option 3: The NEF updates the subscription parameters using the Nudm_ParameterProvision service before sending a response.
Option 4: The NEF notifies the UDM to temporarily suspend all 5GLAN services related to the deleted subscription.
Explanation: When an authorized AF initiates a deletion request for a 5GLAN parameters provision subscription, and this request is successfully processed by the UDM, the NEF's role is to remove the specified subscription. Following successful deletion, the NEF sends an HTTP '204 No Content' status code to the AF, indicating the action was completed without requiring return of any content, as per standard HTTP protocol practice for such scenarios.