Question: What is the primary purpose of the eNB Configuration Update procedure in the context of E-UTRAN's X2 interface?
Option 1: To manage User Equipment (UE) handovers between two eNBs.
Option 2: To synchronize radio frame timing and System Frame Number (SFN) across all eNBs.
Option 3: To update application-level configuration data for interoperability between two eNBs over the X2 interface.
Option 4: To broadcast system information from one eNB to another for cell selection.
Explanation: The eNB Configuration Update procedure is designed to ensure two eNBs can interoperate correctly by updating necessary application-level configuration data, crucial for seamless communication and management between eNBs.