Question: What is the primary purpose of the "Context transfer from source eNB to target eNB" function supported by the X2AP protocol during Intra LTE-Access-System Mobility Support for a UE in ECM-CONNECTED?
Option 1: To establish a new S1 user plane tunnel for data forwarding
Option 2: To ensure seamless continuity of service by transferring the UE's context to the target eNB during handover
Option 3: To control the load management between different eNBs in the network
Option 4: To provision the TNL information for SCG bearers
Explanation: The correct answer is Option 2 because, during handover (Intra LTE-Access-System Mobility), transferring the UE's context from the source eNB to the target eNB is crucial for maintaining the continuity of the user's session and ensuring a seamless handover experience. This function enables the target eNB to quickly assume responsibility for the UE without requiring a complete re-establishment of the connection, thus minimizing service interruption.