Question: What is the name of the measurement that provides the number of successful additions of LWA DRB in E-UTRAN?
Option 1: LWI.LwaDrbAddAtt
Option 2: Number of attempted additions of LWA DRB
Option 3: LWI.LwaDrbAddSucc
Option 4: EPS MobilitySet
Explanation: The correct answer is LWI.LwaDrbAddSucc, which is the measurement name that provides the number of successful additions of LWA DRB in E-UTRAN. This measurement is triggered by the receipt of RRCConnectionReconfigurationComplete message and is valid for packet switched traffic.