Question: Which of the following is NOT a primary capability supported by the MCData client functional entity for Mission Critical Data (MCData) services?
Option 1: Session Description Protocol (SDP) for multimedia sessions
Option 2: Short Message Service (SMS) for text messaging
Option 3: Secure Data Streaming (SDS) for encrypted data transfer
Option 4: File Distribution for disseminating files to multiple recipients
Explanation: The MCData client supports various capabilities including SDS, file distribution, data streaming, and IP connectivity for services like conversation management, robots control, enhanced status, database enquiries, and secured internet. Short Message Service (SMS) is not mentioned among the supported capabilities, making it the correct answer. This question requires understanding of the specific functionalities enabled by the MCData client in telecom networks, particularly in the context of mission-critical communications.