Question: Which protocol(s) are utilized by the LM-UU reference point for subscription/notification related signaling in Location Management functions within the 5G System (5GS)?
Option 1: Only HTTP-1 and HTTP-2
Option 2: Only SIP-1 and SIP-2
Option 3: Both SIP-1, SIP-2 for signalling and HTTP-1, HTTP-2 for transport/routing
Option 4: None of the above (uses proprietary protocols)
Explanation: In Location Management functions within the 5G System, the LM-UU reference point leverages standard protocols. For subscription/notification signaling, it uses SIP-1 and SIP-2 for signaling tasks. Additionally, HTTP-1 and HTTP-2 are used for transport and routing of location management signaling, showcasing a dual use of protocol sets tailored to the communication type required.