Question: What triggers a MnS (Management and Orchestration) producer to send heartbeat notifications to consumer(s), as per the defined generic management services?
Option 1: Expiration of the MnS producer's heartbeat period only.
Option 2: Receipt of a new subscription request from an MnS consumer.
Option 3: Completion of a successful resource allocation by the MnS producer.
Option 4: Either the expiration of the MnS producer heartbeat period or a request for an immediate heartbeat notification from an MnS consumer.
Explanation: This is correct because, as outlined in the context of generic management services, heartbeat notifications are sent under two specific conditions: (1) when the predefined heartbeat period of the MnS producer has elapsed, ensuring ongoing operational visibility, and (2) in response to an explicit request from an MnS consumer for an immediate heartbeat notification, facilitating on-demand status checks. This dual-trigger approach ensures both periodic and on-demand monitoring capabilities are supported.