Question: What type of addressing information may be used to identify a User Equipment (UE) in the context of the Nnef_ParameterProvision service in a 5G System?
Option 1: Only IMSI (International Mobile Subscriber Identity)
Option 2: Only MSISDN (Mobile Station International Subscriber Directory Number)
Option 3: Either an APN (Access Point Name) or a GUTI (Globally Unique Temporary Identifier)
Option 4: Either a UE IP address or a UE MAC address
Explanation: The Nnef_ParameterProvision service allows external parties to provision information for use by the UE in a 5GS. According to the specification, UE addressing information may correspond to either a UE IP address or a UE MAC address, making option 4 the correct answer.