Question: Which of the following statements accurately describes the variation in network architectures for Cell Broadcast Service (CBS) across different mobile network technologies as per 3GPP specifications?
Option 1: All mobile network technologies (GSM, UMTS, EPS, and 5GS) utilize a uniform network architecture for CBS.
Option 2: The network architectures for CBS differ among GSM, UMTS, EPS, and 5GS, each with its own specific description.
Option 3: Only GSM and UMTS have distinct network architectures for CBS, while EPS and 5GS share a common one.
Option 4: Network architecture for CBS is only defined for GSM and 5GS, with UMTS and EPS using default configurations.
Explanation: This option correctly reflects the understanding that as mobile network technologies evolve (from GSM to UMTS, then to EPS, and finally to 5GS), the network architectures supporting specific services like Cell Broadcast Service (CBS) also undergo changes. Each technology generation has its unique architectural requirements, necessitating distinct descriptions for each, as implied by the separate clauses for each in the 3GPP TS 23.041 specification. This highlights the importance of tailored network designs to support service delivery across different telecom standards.