200-901 Question #526: Real Exam Question with Answer & Explanation

Question

What is a difference between device-level and controller-level infrastructure management?

Options

• ADevice-level management uses NETCONF, whereas controller-level management does not
• BController-level management uses APIs to simplify the developer experience, whereas device-
• CController-level management is more widely supported because it is standards-based, whereas
• DController-level management exposes northbound, southbound, eastbound, and westbound APIs,

Explanation

{"question_number": 4, "question": "What is a difference between device-level and controller-level infrastructure management?", "correct_answer": "B. Controller-level management uses APIs to simplify the developer experience, whereas device-level management requires direct interaction with each device.", "explanation": "Device-level management means configuring each individual device (router, switch, etc.) directly - often via CLI, SNMP, or NETCONF - which is tedious and error-prone at scale. Controller-level management (e.g., Cisco DNA Center, APIC) abstracts the underlying devices and exposes northbound APIs (REST, RESTCONF, gRPC) that allow developers and automation tools to manage the entire network programmatically from a single control point, greatly simplifying the developer experience. Option A is misleading because controllers can also use NETCONF on their southbound interfaces. Options C and D describe real concepts but are not the defining difference between the two levels.", "generated_by": "claude-sonnet", "llm_judge_score": 4}

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