Question: What is a key requirement for the 5G system when supporting services that span across multiple network slices and 5G networks, particularly at the monitoring API?
Option 1: Providing time stamps with a unique identifier for each network slice
Option 2: Offering encryption for all inter-network slice communications
Option 3: Ensuring Quality of Service (QoS) prioritization for public networks only
Option 4: Implementing a centralized authentication server for all slices
Explanation: The correct answer highlights the necessity for a common time base, ensuring synchronization and accurate timing across different network slices and 5G networks, crucial for coordinated service delivery and monitoring.