What are the two layers of configuration management in Cisco NSO?

In Cisco Network Services Orchestrator (NSO), the two layers of configuration management are focused on effectively managing both the services that are delivered and the devices that provide these services. The service manager layer deals with the orchestration of network services, ensuring that the services are correctly defined, deployed, and maintained. It allows users to create, read, update, and delete service requests, enabling the automation of complex service delivery processes.

The device manager layer, on the other hand, is responsible for managing the actual network devices. This includes handling device configurations, monitoring their status, and ensuring that the devices can effectively execute the service requests sent by the service manager. It is crucial for maintaining the state and operational readiness of the devices in order to support the services.

These two layers work in tandem to provide a coherent and centralized approach to managing network changes and configurations, allowing for efficient service delivery and operational management across a diverse set of network elements.

The other options do not accurately reflect the structure and purpose of configuration management in Cisco NSO, as they either encompass unrelated functions or mix different management concepts outside the scope of service and device management.