Question: In a non-public 5G network, what type of authentication methods can be utilized for User Equipment (UE) network access, in addition to 3GPP authentication methods?
Option 1: Only AKA (Authentication and Key Agreement) based methods with 3GPP identities and credentials.
Option 2: Non-AKA based authentication methods (e.g., provided by the EAP framework) with non-3GPP identities and credentials, subject to agreement between parties.
Option 3: Biometric authentication methods exclusively for IoT devices.
Option 4: No alternative authentication methods are allowed beyond standard 3GPP procedures.
Explanation: According to the specifications for the 5G system, non-public networks have the flexibility to utilize not only 3GPP authentication methods but also non-AKA based authentication methods (such as those provided by the EAP framework) for UE network access. This allows for the use of non-3GPP identities and credentials, enhancing interoperability and security customization for private or hosted non-public networks, subject to agreements between involved parties (e.g., MNOs and 3rd party service providers).