Question: What is the primary purpose of the Nnsacf_SliceEventExposure_Unsubscribe service operation in the 5G System (5GS)?
Option 1: To subscribe to event notifications for a specific network slice.
Option 2: To request additional information about a network slice.
Option 3: To modify an existing subscription to event notifications.
Option 4: To cancel an existing subscription to event notifications.
Explanation: The Nnsacf_SliceEventExposure_Unsubscribe service operation is used by the consumer NF to unsubscribe from event notifications, as indicated by the "unsubscribe" keyword in its name. This operation requires a Subscription Correlation Id as input and returns an Operation execution result response as output, confirming that it is indeed related to canceling an existing subscription.