Question: What is the primary characteristic of the "Source RNC to Target RNC Transparent Container" Information Element (IE) in relation to the Core Network (CN) during inter-system handovers to UTRAN?
Option 1: It initiates a direct communication channel with the CN for handover optimization.
Option 2: Its contents are decrypted and analyzed by the CN before forwarding to the target RNC.
Option 3: It remains transparent to the Core Network (CN), passing through without alteration or inspection.
Option 4: It triggers a CN-driven verification process to authenticate the handover request.
Explanation: The correct answer highlights that the "Source RNC to Target RNC Transparent Container" IE is designed to be transparent to the Core Network (CN). This means the CN does not alter, inspect, or interpret its contents; it simply forwards the IE as is from the source RNC (or external relocation source in inter-system handovers) to the target RNC. This transparency ensures efficient and straightforward handover processes without unnecessary core network interventions.