Which protocol's use implies a YANG data model is employed?

RESTCONF is a network management protocol that uses YANG data models to configure and monitor network devices. It defines how to translate YANG data models into RESTful operations (GET, POST, PUT, DELETE) over HTTP. SNMP uses its own MIBs (Management Information Bases) for data representation, not YANG. REST is a general architectural style for networked applications and doesn't inherently imply YANG; while RESTCONF is RESTful, not all REST APIs use YANG. NX-API is a Cisco-specific API for Nexus devices, which can use JSON or XML, but doesn't exclusively imply YANG.