Question: In a 5G system, what is a key aspect of temporary identifiers used for UEs (User Equipment) in indirect network connections, as per operator configuration?
Option 1: Permanent storage of subscriber identity on the UE
Option 2: Mandatory sharing of subscriber identity with third-party services
Option 3: Hiding of the UE's subscriber identity from passive attacks
Option 4: Automatic deactivation after a single use
Explanation: The correct answer highlights a crucial security feature of temporary identifiers in 5G systems. By hiding the UE's subscriber identity, the system protects user privacy and security from passive attacks, safeguarding subscriber identity and user identifying information, especially in indirect network connections.