Question: In the context of handover procedures, what is the primary purpose of the 'Source NG-RAN Node To Target NG-RAN Node Transparent Container' Information Element (IE)?
Option 1: To authenticate User Equipment (UE) during inter-3GPP Radio Access Technology (RAT) handovers.
Option 2: To manage Quality of Service (QoS) parameters between the Evolved Packet Core (EPC) and 5G System (5GS).
Option 3: To synchronize timing advance values between source and target base stations.
Option 4: To transparently pass radio-related information between handover source and target through the EPC, specifically for inter-3GPP RAT handovers from EPS to 5GS.
Explanation: The correct answer is Option 4 because this choice accurately reflects the described purpose of the 'Source NG-RAN Node To Target NG-RAN Node Transparent Container' IE, facilitating seamless exchange of necessary radio-related data during inter-3GPP RAT handovers from EPS to 5GS through the EPC.