Question: What is the role of AUSF and UDM in the primary authentication process for a Credentials Holder in the 5G System architecture?
Option 1: They are used for secondary authentication only.
Option 2: They are used for authorization purposes only.
Option 3: They are not involved in the primary authentication process.
Option 4: They are used for primary authentication and key generation using methods such as 5G AKA, EAP-AKA', EAP-TLS or other key-generating EAP methods.
Explanation: In the context of the 5G System architecture, AUSF (Authentication Server Function) and UDM (Unified Data Management) play a crucial role in primary authentication for Credentials Holders. They are responsible for authenticating users using various key-generating EAP methods such as 5G AKA, EAP-AKA', EAP-TLS or other similar methods.