Question: What is the primary characteristic of the SEAL-UU reference point in the context of Service Enabler Architecture Layer for Verticals (SEAL)?
Option 1: A standardized interface for all SEAL services, defined universally across all verticals.
Option 2: A generically referred interaction point between a SEAL client and its corresponding SEAL server, with specifics defined per service.
Option 3: A reference point exclusively used for network resource allocation in SEAL-enabled networks.
Option 4: A protocol for secure authentication between SEAL clients and servers across different verticals.
Explanation: The correct answer, Option 2, accurately reflects the nature of the SEAL-UU reference point. It highlights that while the term 'SEAL-UU' generically describes client-server interactions, the specific details of these interactions are defined on a per-service basis within the respective SEAL service functional models. This nuance is crucial for understanding how SEAL accommodates diverse verticals with potentially unique requirements. The other options misrepresent the SEAL-UU's role, either by implying an overly standardized approach (Option 1), limiting its scope to network resource allocation (Option 3), or associating it exclusively with security protocols (Option 4).