Question: What is the primary purpose of the Unicast QoS Monitoring Subscription Update Procedure in a telecom network?
Option 1: To establish a new unicast Quality of Service (QoS) monitoring subscription for User Equipment (UE).
Option 2: To terminate an existing unicast QoS monitoring subscription for a specific application.
Option 3: To modify the billing cycle for QoS-related services.
Option 4: To update the parameters of an already existing unicast QoS monitoring subscription.
Explanation: Updating parameters of an existing subscription allows for dynamic adjustments to what is being monitored (e.g., throughput, latency, packet loss) without requiring the setup of a new subscription. This is crucial for real-time network optimization and ensuring that Service Level Agreements (SLAs) are met for various vertical services relying on the telecom network's QoS capabilities.