Question: What triggers the creation of KNASint and KNASenc keys?
Option 1: Primary authentication
Option 2: NAS SMC procedure
Option 3: Inter-gNB-CU-handover
Option 4: AS key re-keying
Explanation: According to the security architecture of the 5G System, KNASint and KNASenc keys are derived based on a KAMF when running a successful NAS SMC procedure. This highlights the importance of secure communication between the UE and the network during the NAS SMC procedure.