Question: What is the primary purpose of the Visited Country FQDN for N3IWF in a roaming scenario, as per 5G System (5GS) architecture?
Option 1: To authenticate the User Equipment (UE) with the Home Public Land Mobile Network (HPLMN)
Option 2: To determine the optimal N3IWF for load balancing within the visited country
Option 3: To facilitate billing and charging for roaming services
Option 4: To determine whether the visited country mandates the selection of a local N3IWF for regulatory compliance
Explanation: The Visited Country FQDN for N3IWF primarily helps a roaming UE to ascertain if the visited country requires using a local N3IWF due to regulatory mandates, ensuring compliance and facilitating seamless communication services while roaming.