Question: What is the primary purpose of the Namf_Communication_AMFStatusChangeSubscribe service operation in the 5G System?
Option 1: To update the AMF status for a specific UE.
Option 2: To retrieve the current AMF status for multiple UEs.
Option 3: To unsubscribe from AMF Status Change notifications.
Option 4: To subscribe to receive notifications when the AMF status changes.
Explanation: The Namf_Communication_AMFStatusChangeSubscribe service operation is used by an NF to request notifications when the AMF status changes. This allows the NF to stay informed about changes to the AMF and take necessary actions. The GUAMI(s) input parameter is used to identify the specific AMF for which the NF wants to receive status change notifications.