Question: What is the primary purpose of the SeNB Reconfiguration Completion procedure in E-UTRAN, as related to UE interactions?
Option 1: To initiate a new bearer setup for enhanced QoS (Quality of Service) in the UE.
Option 2: To request location updates from the UE for better mobility management.
Option 3: To notify the MeNB about handover preparation for the UE.
Option 4: To inform the SeNB whether a requested configuration was successfully applied by the UE.
Explanation: The correct answer, Option 4, aligns with the procedure's defined purpose - to provide feedback to the Secondary eNodeB (SeNB) about the successful application of a requested configuration by the User Equipment (UE). This is crucial for ensuring that both the network and UE are synchronized in terms of configuration settings, which impacts overall network performance and user experience. The other options do not accurately reflect the primary purpose of this procedure as described.