Question: In a 5G network, what is the primary purpose of the Routing Indicator contained in the EFRouting_Indicator (EF) on a USIM, when used in conjunction with the MCC and MNC?
Option 1: To authenticate the User Equipment (UE) to the Access and Mobility Management Function (AMF)
Option 2: To encrypt signaling messages between the UE and the Next Generation Core Network (NGCN)
Option 3: To route network signaling with SUCI (Subscription Concealed Identifier) to appropriate Authentication Server Function (AUSF) and Unified Data Management (UDM) instances
Option 4: To manage Quality of Service (QoS) for different traffic flows within the UE
Explanation: The correct answer highlights the Routing Indicator's role in facilitating the routing of network signaling with SUCI to specific AUSF and UDM instances, crucial for secure and efficient authentication and data management in a 5G network. The other options describe unrelated functions: authentication, encryption, and QoS management.