Question: What is the primary function of the NSSAAF in relation to Authentication and Authorization service for consumer NFs?
Option 1: To perform protocol conversion for non-EAP methods.
Option 2: To authenticate user equipment directly without AAA Server involvement.
Option 3: To provide encryption keys for secure communication between NFs.
Option 4: To relay EAP or EAP-TTLS inner method messages towards a AAA Server and perform related protocol conversion as needed.
Explanation: The NSSAAF's primary role in Authentication and Authorization is to act as an intermediary, relaying EAP or EAP-TTLS messages between the consumer NF and the AAA Server. This includes performing any necessary protocol conversions to facilitate communication.