Question: In Public Network Integrated Non-Public Networks (PNI-NPN), what is the sequence of authentications that takes place?
Option 1: Secondary authentication, followed by primary authentication and then slice-specific authentication.
Option 2: Primary authentication, followed by secondary authentication and then slice-specific authentication.
Option 3: Slice-specific authentication, followed by primary authentication and then secondary authentication.
Option 4: Primary authentication with the public network, followed by secondary authentication and then slice-specific authentication.
Explanation: In PNI-NPN, the primary authentication is performed with the public network as described in clause 6.1. After a successful primary authentication, secondary authentication and slice-specific authentication can take place. This sequence ensures that the user is first authenticated with the public network before any further authentications occur within the non-public network.