Question: What is the primary purpose of the Serial Number parameter in the context of Cell Broadcast Service (CBS)?
Option 1: To authenticate the source of the warning message
Option 2: To indicate the priority level of the broadcasted message
Option 3: To specify the geographical area for which the message is intended
Option 4: To uniquely identify a particular warning message from the indicated source and type
Explanation: The Serial Number parameter serves to distinguish between different warning messages originating from the same source and of the same type, ensuring updates or repetitions of messages can be properly managed and recognized within the Cell Broadcast Service framework.