Question: What is the primary purpose of combining the eNB UE X2AP ID with the eNB UE X2AP ID Extension over the X2 interface within an eNB?
Option 1: To authenticate User Equipment (UE) for security purposes
Option 2: To prioritize signaling connections based on UE type
Option 3: To manage multiple E-UTRAN architectures simultaneously
Option 4: To uniquely identify a UE for the lifetime of its associated signaling connection
Explanation: The correct answer highlights the key function of combining these identifiers: to ensure unique identification of a User Equipment (UE) throughout the duration of its signaling connection, crucial for maintaining seamless communication and proper resource allocation within the Evolved Universal Terrestrial Radio Access Network (E-UTRAN).