Quick Answer
The answer is transactional configuration changes and structured, hierarchical data models. NETCONF leverages YANG data models to provide a predictable, tree-like structure for configuration and state data, which is far more flexible than SNMP’s flat MIB hierarchy, making it ideal for complex automation tasks. Additionally, NETCONF supports candidate configurations and confirmed commits, enabling atomic, validated changes that can be rolled back if needed—a capability SNMP lacks entirely. On the Cisco DevNet Associate 200-901 exam, this distinction tests your understanding of modern automation protocols versus legacy polling; a common trap is confusing SNMP’s trap-based monitoring with NETCONF’s transactional control. Remember the mnemonic “NETCONF is Transactional and YANG-structured” to keep these two key benefits straight.
This 200-901 practice question tests your understanding of infrastructure and automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are benefits of using NETCONF over SNMP for network automation? (Select exactly 2.)
Structured data models (YANG)
YANG provides standardized data models.
Lower CPU usage on devices
Why wrong: Not necessarily.
Binary data encoding
Why wrong: NETCONF uses XML, not binary.
Transactional configuration changes
NETCONF supports rollback on failure.
Simple polling mechanism
Why wrong: SNMP is simpler for polling.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Structured data models (YANG)
Option A is correct because NETCONF uses YANG (RFC 6020/7950) to define structured, hierarchical data models, enabling consistent and predictable configuration and state data retrieval. This contrasts with SNMP's flat MIB structure, which is less flexible for complex automation tasks. Option D is correct because NETCONF supports candidate configurations and confirmed commits (RFC 6241, Section 8.4), allowing transactional changes that can be validated and rolled back atomically, whereas SNMP lacks built-in transaction support.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Structured data models (YANG)
Why this is correct
YANG provides standardized data models.
Related concept
Read the scenario before looking for a memorised answer.
Lower CPU usage on devices
Why it's wrong here
Not necessarily.
Binary data encoding
Why it's wrong here
NETCONF uses XML, not binary.
Transactional configuration changes
Why this is correct
NETCONF supports rollback on failure.
Related concept
Read the scenario before looking for a memorised answer.
Simple polling mechanism
Why it's wrong here
SNMP is simpler for polling.
Common exam traps
Cisco often tests the misconception that NETCONF is 'lighter' than SNMP, but the trap here is that NETCONF's XML and SSH overhead actually increase CPU usage, while SNMP's binary encoding and UDP make it more efficient for simple monitoring tasks.
Detailed technical explanation
NETCONF operates over SSH (RFC 6242) and uses RPCs to execute operations like <get-config>, <edit-config>, and <commit>. The <candidate> datastore allows multiple changes to be staged and validated before committing, and the <confirmed-commit> capability ensures rollback if a confirmation timer expires. In real-world scenarios, this transactional model is critical for large-scale network changes, such as updating ACLs across hundreds of devices, where a failed commit can be automatically reverted without manual intervention.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 200-901 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Infrastructure and Automation — study guide chapter
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Infrastructure and Automation practice questions
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Cisco DevNet Associate 200-901 study guide
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FAQ
Infrastructure and Automation — This question tests Infrastructure and Automation — Read the scenario before looking for a memorised answer..
The correct answer is: Structured data models (YANG) — Option A is correct because NETCONF uses YANG (RFC 6020/7950) to define structured, hierarchical data models, enabling consistent and predictable configuration and state data retrieval. This contrasts with SNMP's flat MIB structure, which is less flexible for complex automation tasks. Option D is correct because NETCONF supports candidate configurations and confirmed commits (RFC 6241, Section 8.4), allowing transactional changes that can be validated and rolled back atomically, whereas SNMP lacks built-in transaction support.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This 200-901 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-901 exam.
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