The correct answers are B. Southbound API is based on NETCONF and XML and E. Northbound API is RESTful, using JSON.
In Cisco Catalyst SD-WAN, vManage interacts in two directions:
* Northbound APIs are used by external applications to communicate with vManage. These APIs are RESTful and commonly use JSON payloads.
* Southbound communication from vManage toward the SD-WAN devices uses NETCONF with XML encoding for configuration exchange.
The southbound API between vManage and managed devices is based on NETCONF/XML, which is used for device configuration and management communication.
The northbound API exposed by vManage is RESTful and uses JSON, which is the standard method for external tools and applications to integrate with Cisco SD-WAN Manager.
* A. Southbound API is based on OMP and DTLS. OMP and DTLS are used in the SD-WAN control plane, not as the vManage southbound API format.
* C. Northbound API is based on RESTCONF and JSON. vManage northbound integration is typically described as RESTful API using JSON, not specifically RESTCONF.
* D. Southbound API is based on RESTCONF and JSON. This is incorrect because the southbound side is NETCONF/XML, not RESTCONF/JSON.
ENCOR exam point:
For Cisco SD-WAN Manager APIs, remember:
* Northbound = RESTful + JSON
* Southbound = NETCONF + XML