Question: In a Wireless and Wireline Convergence Access Support for the 5G System, what functionality does the W-AGF support on behalf of a legacy Fixed Network Residential Gateway (FN-RG) to enable connectivity to the 5G Core Network (5GC)?
Option 1: Only UE NAS registration
Option 2: UE NAS registration and session management functionality, including N1 signaling towards AMF and mapping between Y5 and N1/N2 interfaces
Option 3: Authentication of FN-RG using only Cablelabs protocols
Option 4: Direct PDU Session establishment without N2 interface involvement
Explanation: The correct answer is Option 2 because the W-AGF acts on behalf of the FN-RG to provide comprehensive functionality, including UE NAS registration, session management, N1 signaling towards AMF, and handling Y5 to N1/N2 interface mappings, ensuring seamless integration of legacy devices into the 5G ecosystem.