Question: What is required for a UE supporting UAS services to access 5GS for UAS services?
Option 1: A valid IMSI
Option 2: A valid IP address
Option 3: An assigned CAA-level UAV ID and a valid aerial subscription in the UE's subscription
Option 4: A valid authentication token
Explanation: To access 5GS for UAS services, the UE supporting UAS services must have an assigned CAA-level UAV ID and there should be a valid aerial subscription in the UE's subscription. This ensures that the UE is authorized to use UAS services and has the necessary credentials to do so.