Question: What is the purpose of a Reserved Service Label in a HA-APN Network Identifier?
Option 1: To identify the MCC and MNC of the operator.
Option 2: To indicate the type of service requested by the UE.
Option 3: To specify the FQDN of the Home Agent (HA).
Option 4: To determine the roaming agreement between operators.
Explanation: A Reserved Service Label is used to indicate the type of service requested by the User Equipment (UE), which allows the HA to interpret it as a request for a specific service. This label is agreed upon between operators who have roaming agreements, enabling them to provide the required services to their subscribers.