Question: What is the purpose of the PKMF address information element in the context of ProSe Key Management Function?
Option 1: To provide a unique identifier for each UE connected to a ProSe UE-to-network relay.
Option 2: To provide the IP address of a ProSe Key Management Function associated with remote UEs connected to or disconnected from a UE acting as a ProSe UE-to-network relay.
Option 3: To authenticate UEs before establishing a connection with a ProSe UE-to-network relay.
Option 4: To encrypt data transmitted between UEs and a ProSe UE-to-network relay.
Explanation: The PKMF address information element is used to provide the IP address of a ProSe Key Management Function, which is essential for managing security keys for remote UEs connected to or disconnected from a UE acting as a ProSe UE-to-network relay. This allows for secure communication and authentication between the UEs and the ProSe Key Management Function.