Question: What is the primary purpose of the eNB CP Relocation Indication procedure in an E-UTRAN network, specifically for NB-IoT UEs utilizing Control Plane CIoT EPS Optimization?
Option 1: To initiate a handover procedure for UEs moving between different eNodeBs.
Option 2: To request MME authentication for a UE's re-establishment and trigger establishment of the UE-associated logical S1-connection.
Option 3: To manage the allocation of radio resources for NB-IoT devices within a cell.
Option 4: To notify the MME of changes in eNodeB configuration affecting multiple UEs.
Explanation: The correct answer reflects the purpose of the eNB CP Relocation Indication procedure as it pertains to NB-IoT UEs using Control Plane CIoT EPS Optimization, ensuring secure re-establishment of UE connections and setting up necessary S1-connection infrastructure between the eNodeB and MME.