Question: What is a key difference between the CSC-11 and CSC-4 reference points in the context of Mission Critical (MC) services configuration management when a User Equipment (UE) is off-network?
Option 1: CSC-11 operates over LTE, while CSC-4 operates over 5G NR.
Option 2: CSC-11 requires SIP-1 and SIP-2 for security, whereas CSC-4 does not.
Option 3: CSC-11 is used for group communications, whereas CSC-4 is for individual configurations.
Option 4: CSC-11 does not support subscription/notification, unlike CSC-4, and thus does not require SIP-1 and SIP-2 reference points.
Explanation: The correct answer highlights a crucial distinction between the two reference points. CSC-11 is designed for off-network MC service client configuration without the need for continuous subscription or notification updates, which are facilitated by SIP-1 and SIP-2 in the case of CSC-4. This difference impacts how configuration management is handled depending on the UE's network status, emphasizing efficient resource utilization when the UE is off-network.