Question: In a 5G network, where are the 5G NAS security context parameters required to be stored, according to conformance requirements for UE (User Equipment) behavior with a non-removable Universal Subscriber Identity Module (nrUSIM)?
Option 1: Only on the nrUSIM
Option 2: On the USIM or in a non-volatile memory in the Mobile Equipment (ME), alongside the SUPI from the USIM
Option 3: Exclusively in a volatile memory within the UE to enhance security through ephemeral storage
Option 4: Directly on the 5G network infrastructure for centralized management
Explanation: This is correct because storing sensitive security context parameters both on the USIM (for secure, portable storage) and in a non-volatile memory within the ME (to ensure persistence across power cycles) provides a balanced approach to security and functionality. This dual-storage requirement ensures that the SUPI, crucial for identifying the subscriber, is securely stored and can be verified against the USIM's SUPI, enhancing authentication integrity as outlined in conformance requirements for UE behavior with nrUSIM.