Question: In an inter-3GPP RAT handover scenario from EPS to 5GS, what is the primary purpose of the "Target NG-RAN Node To Source NG-RAN Node Transparent Container" as defined in E-UTRAN protocols?
Option 1: To encrypt sensitive user data during handover between different Radio Access Technologies (RATs)
Option 2: To transparently pass radio-related information between the handover target and source through the Evolved Packet Core (EPC)
Option 3: To manage Quality of Service (QoS) parameters for ongoing sessions during the handover process
Option 4: To authenticate the user's device with the new RAT before completing the handover
Explanation: The correct answer, Option 2, highlights the container's role in facilitating seamless inter-3GPP RAT handovers by allowing radio-related information to be shared transparently between the target and source NG-RAN nodes via the EPC. This ensures continuity of service without requiring direct radio interface communication between the disparate RATs involved in the handover from EPS (Evolved Packet System) to 5GS (Fifth Generation Core Service).