Question: What is the primary objective of the Reset procedure in the context of E-UTRAN's X2 Application Protocol (X2AP), involving eNBs or an eNB and an en-gNB in EN-DC?
Option 1: To update application level configuration data between eNBs.
Option 2: To initiate UE-associated signaling for handover processes.
Option 3: To align resources between eNBs (or eNB and en-gNB) after an abnormal failure, resetting the X2 interface.
Option 4: To terminate all ongoing sessions on the X2 interface.
Explanation: The correct answer is Option 3 because the Reset procedure's main goal is to synchronize resources between involved base stations (eNBs or an eNB and an en-gNB in EN-DC scenarios) following an unexpected failure, which specifically involves resetting the X2 interface. This process does not impact previously exchanged configuration data nor is it related to UE-associated signaling, making Options 1, 2, and 4 incorrect.