Question: What action can an MME (Mobility Management Entity) take if it doesn't receive an acknowledgement or failure response for an MME Configuration Update sent to an eNB (evolved Node B), given that the update content remains unchanged?
Option 1: The MME must wait for a predefined timeout before sending any new configuration updates to any eNB.
Option 2: The MME may reinitiate the MME Configuration Update procedure with the same content to the same eNB.
Option 3: The MME should send an error report to the Operations and Maintenance (O&M) system and refrain from further updates to the eNB in question.
Option 4: The MME is required to modify the update content before reattempting the configuration update with the same eNB.
Explanation: This option correctly reflects the specified behavior for handling abnormal conditions where an acknowledgement or failure message is not received. Reinitiating the procedure with identical content, under these circumstances, allows the MME to ensure configuration consistency without introducing new variables that could complicate troubleshooting or the update process itself. This approach aligns with maintaining network stability and ensuring timely synchronization between the MME and eNB.