Question: How does the MME differentiate between a GUTI mapped from P-TMSI/RAI and a native GUTI in PLMNs deployed with a specific mechanism?
Option 1: Based on the implicit indication sent by the UE.
Option 2: Based on the type of access technology used by the UE.
Option 3: Based on the location of the UE within the network.
Option 4: Based on the explicit indication sent by the UE.
Explanation: In PLMNs deployed with a specific mechanism, the MME uses an explicit indication sent by the UE to differentiate between a GUTI mapped from P-TMSI/RAI and a native GUTI. This allows the MME to accurately identify the type of GUTI being used by the UE and process it accordingly.