Question: In a 5G system, what is a key aspect of supporting Public Warning System (PWS) and eCall for User Equipment (UE) connected via a Critical Communications Network (CPN), as per regulatory requirements?
Option 1: Ensuring UE connectivity solely via 3GPP access
Option 2: Providing an efficient data path within the CPN for intra-CPN communications, subject to operator policy
Option 3: Mandating all UEs to subscribe to a single network operator for PWS and eCall services
Option 4: Disabling direct connections for intra-PIN communications to prioritize 5G network traversal
Explanation: The correct answer highlights that supporting PWS and eCall for UEs connected via a CPN, subject to local regulations, specifically applies to UEs connected via 3GPP access. This emphasizes the importance of standardized access technology (3GPP) in ensuring compliance with regulatory requirements for emergency services.