Question: What is the primary purpose of the Nudsf_Timer_Notify service operation in the 5G System (5GS)?
Option 1: To request a new timer from the NF service consumer.
Option 2: To notify the NF service consumer about a timer expiry.
Option 3: To cancel an existing timer in the UDSF.
Option 4: To update the timer configuration in the NF service consumer.
Explanation: The Nudsf_Timer_Notify service operation is used by the UDSF to inform the NF service consumer that a specific timer has expired. This allows the NF service consumer to take appropriate action based on the timer expiry.