Question: In Mission Critical services over a 5G System, how can resource requests for the media plane be exchanged between an MC service server and the 5GS (PCF)?
Option 1: Exclusively via the N5 reference point for direct interaction.
Option 2: Only indirectly using the N33 reference point with mediation by NEF.
Option 3: Solely through IMS standard procedures utilizing the Rx reference point.
Option 4: Either directly via the N5 or Rx reference points, or indirectly via the N33 reference point with NEF.
Explanation: This option correctly reflects the flexibility for resource requests. The procedure allows for both direct interaction (using N5 or Rx) between the MC service server and 5GS (PCF), as well as indirect exchange (via N33 with NEF mediation), supporting various operational scenarios.