Match the NSO component with its respective roles or tasks.

Service Manager

Is in charge of service modeling using YANG, mapping to device models using templates or Java$/$Python code and service management activities

CDB

Stores NSO's own configuration, the configuration of all services, copies of the configuration of all managed devices, and all operational data specific to NSO

Device Manager

Simplifies device interface integration and handles device configuration scenarios

Core Engine

Handles all operations within the transaction manager, including event logging$,$ performing validation, authentication, and rollback management