Which statement about the northbound APIs of Cisco DNA Center and vManage is correct?

Cisco DNA Center and vManage utilize northbound APIs that are RESTful and primarily implement RESTCONF. RESTCONF is a REST-like protocol that uses HTTP methods (GET, PUT, POST, DELETE) to access and manipulate data models defined by YANG. This allows for programmatic interaction with network devices and controllers. While NETCONF is also a programmatic interface for network devices, it is an XML-based protocol that uses RPCs (Remote Procedure Calls) and is more commonly associated with southbound interfaces or direct device interaction rather than the higher-level, controller-to-application communication typical of northbound APIs in these platforms. Northbound APIs are designed for consumption by orchestration systems or applications, not typically for pushing raw configuration changes directly, although they facilitate this through data model manipulation. They generally exchange JSON-formatted payloads, not XML, for modern RESTful APIs.