Question: What triggers the increment of the RNReconfiguration completed measurement in a DeNB?
Option 1: Receipt of a RRCConnectionSetupComplete message from UE
Option 2: Receipt of a RNReconfigurationComplete message from RN
Option 3: Receipt of a HandoverCommand message from MME
Option 4: Receipt of a PathSwitchRequest message from SGW
Explanation: The correct answer is Option 2 because the measurement is incremented when the DeNB receives a RNReconfigurationComplete message from RN, as specified in 3GPP TS 36.331. This indicates that the RN reconfiguration has been successfully completed.