Question: In MR-DC with 5GC, what assumption does the Secondary Node (SN) make about SCG (re)selection if roaming and access restriction information is not available?
Option 1: The SN assumes a default set of restrictions based on the UE's subscription profile.
Option 2: The SN considers that there is no restriction for SCG (re)selection.
Option 3: The SN initiates a query to the Core Network for the necessary information.
Option 4: The SN defers SCG (re)selection until the information becomes available.
Explanation: In the context of Multi-RAT Dual Connectivity (MR-DC) with a 5G Core (5GC), if the Secondary Node (SN) lacks roaming and access restriction information, it operates under the principle of least restriction to ensure connectivity. Thus, without explicit restrictions, the SN assumes there are no limitations for Secondary Cell Group (SCG) (re)selection, facilitating uninterrupted service to the User Equipment (UE). This approach highlights the importance of timely information exchange between network nodes in maintaining seamless user experience while respecting access policies.