300-420 Question #10: Real Exam Question with Answer & Explanation

Question

An engineer is working with NETCONF and Cisco NX-OS based devices. The engineer needs a YANG model that supports a specific feature relevant only to Cisco NX- OS. Which model must the engineer choose?

Options

• ANative
• BIEEE
• COpenConfig
• DIETF

Explanation

{"question_number": 6, "question": "An engineer is working with NETCONF and Cisco NX-OS based devices. The engineer needs a YANG model that supports a specific feature relevant only to Cisco NX-OS. Which model must the engineer choose?", "correct_answer": "A. Native", "explanation": "YANG models come in several flavors based on their origin and scope. Native models are vendor-authored models (in this case, Cisco's) that expose the full feature set of a specific OS or platform, including proprietary or platform-specific capabilities not covered by any standard. Since the feature in question is unique to Cisco NX-OS, only the Native model will expose it. IETF (D) and IEEE (B) models cover standardized features defined in RFCs or IEEE specifications - they are vendor-neutral and platform-agnostic. OpenConfig (C) models are also vendor-neutral and driven by operator consensus but likewise cannot cover NX-OS-specific features.", "generated_by": "claude-sonnet", "llm_judge_score": 4}

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