Question: What happens to the UE's RRC connection when it is in the RRC_INACTIVE state, and how can it be resumed?
Option 1: The UE's RRC connection is terminated, and a new connection must be established.
Option 2: The UE's RRC connection is suspended, but the security context is lost.
Option 3: The UE's RRC connection is active, but with reduced capabilities.
Option 4: The UE's RRC connection is suspended, but the UE and gNB/ng-eNB maintain the UE 5G AS security context, which can be reactivated when transitioning to RRC_CONNECTED state.
Explanation: In the RRC_INACTIVE state, the UE's RRC connection is suspended, allowing the UE and gNB/ng-eNB to maintain the UE 5G AS security context. This enables a faster transition back to the RRC_CONNECTED state when needed, as the security context can be reactivated without requiring a new security setup.