Question: What is the primary purpose of the PDU Set Error Rate (PSER) in a 5G System?
Option 1: To measure congestion-related PDU Set losses.
Option 2: To define an upper bound for non-congestion related PDU Set losses and allow for appropriate link layer protocol configurations.
Option 3: To prioritize QoS Flows based on their associated PSER values.
Option 4: To monitor the performance of the RLC and HARQ protocols in a RAN.
Explanation: The correct answer is Option 2 because, according to the text, the primary purpose of the PSER is to define an upper bound for non-congestion related PDU Set losses and allow for appropriate link layer protocol configurations (e.g., RLC and HARQ in a RAN). This enables the system to optimize its performance by adjusting the link layer protocols based on the PSER value.