Question: In the EMM-REGISTERED state, what is the accuracy of the UE location known to the MME when the UE is in EMM-IDLE mode?
Option 1: Serving eNodeB
Option 2: A list of tracking areas containing a certain number of tracking areas
Option 3: Cell ID
Option 4: Location Area Code (LAC)
Explanation: In the EMM-REGISTERED state, when the UE is in EMM-IDLE mode, the UE location is known to the MME with an accuracy of a list of tracking areas containing a certain number of tracking areas. This allows the network to page the UE efficiently when there is incoming traffic for it.