Question: Which reference point does NM-UU utilize for supporting notification management function interactions between the client and server in a 5G System (5GS) or Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access?
Option 1: Uu reference point
Option 2: S1 reference point
Option 3: X2 reference point
Option 4: N2 reference point
Explanation: In the context of telecom networks, specifically for interactions related to notification management functions in a 5G System (5GS) or E-UTRAN access, NM-UU relies on existing infrastructure for efficient communication. The Uu reference point is utilized for this purpose, as it is a well-established interface for user equipment (UE) to communicate with the network, making it suitable for supporting notification management client-server interactions.