Question: In an MBMS (Multimedia Broadcast/Multicast Service) setup, how does an MBMS client typically construct the bootstrap URL for the Service Announcement Channel (SACH) by default, according to 3GPP specifications?
Option 1: By combining the Mobile Network Code (MNC) and Mobile Country Code (MCC)
Option 2: Through a pre-provisioned IP address of an MBMS server
Option 3: By querying a nearby cell for the URL via SMS
Option 4: Using a hardcoded, standard URL across all networks
Explanation: The correct answer is Option 1 because, as per the 3GPP specifications for MBMS, the default procedure for an MBMS client to construct the bootstrap URL for the SACH involves using the Mobile Network Code (MNC) and Mobile Country Code (MCC). This method ensures a standardized approach across different networks while allowing for network-specific identification. The other options are either not mentioned as default behaviors or imply non-standard, less flexible approaches.