Question: What is the primary purpose of the Nausf_UEAuthentication service provided by the AUSF in a 5G system?
Option 1: To protect user data privacy
Option 2: To manage network resources efficiently
Option 3: To provide location-based services
Option 4: To authenticate User Equipment (UE) and recover from synchronization failure situations
Explanation: The Nausf_UEAuthentication service is used to authenticate UE and also to recover from synchronization failure situations, which is critical for maintaining the security and integrity of the 5G system. This service operation is specifically designed for AKA-based authentication, highlighting its importance in ensuring secure communication between the UE and the network.