Question: In the context of Wireless and Wireline Convergence for the 5G System (5GS), what key aspect differs in session management for Fixed Network-Radio Gateway (FN-RG) compared to traditional UE-based sessions?
Option 1: The replacement of User Equipment (UE) with a Wireline Access Gateway Function (W-AGF) and the use of wireline access instead of 3GPP access.
Option 2: Mandatory implementation of Secondary Authentication/Authorization via a DN-AAA server for all PDU Sessions.
Option 3: Restriction to only one SSC (Session and Service Continuity) mode for all types of FN-RG.
Option 4: Obligatory direct connection of FN-RG to the 5GC without any intermediary network functions.
Explanation: This is correct because session management for FN-RG deviates from traditional UE-based sessions by replacing UE with W-AGF and utilizing wireline access instead of traditional 3GPP access, highlighting a crucial adaptation for integrating fixed network elements into the 5GS architecture.