CCNA AI and Network Operations Practice Question
Why are data models such as YANG important in network automation?
⚠ Common exam trap
A common exam trap is to mistakenly believe that YANG data models replace fundamental network functions such as IPv4/IPv6 addressing or routing protocols. Some candidates incorrectly assume that because YANG structures configuration data, it eliminates the need for routing protocols like OSPF or EIGRP, or that it changes how IP addresses function. However, YANG is strictly a modeling language that describes how configuration and state data are represented for automation purposes. It does not alter core networking protocols or addressing schemes. Confusing these roles can lead to selecting incorrect answers that misattribute YANG’s purpose.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
They define a structured way to represent configuration and state data
Data models such as YANG standardize how configuration and operational data are described, which improves consistency for automation systems and APIs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
They define a structured way to represent configuration and state data
Why this is correct
YANG defines a hierarchical, schema-based data model (RFC 6020/7950) that standardizes how configuration and operational state are represented, enabling programmatic access via NETCONF/RESTCONF. This structured representation allows automation tools to reliably validate, read, and modify device settings across vendors without ad-hoc CLI parsing.
- ✗
They replace IPv4 and IPv6 addressing
Why it's wrong here
YANG models describe data structures, not addressing schemes. IPv4 and IPv6 are Layer 3 address families used for packet forwarding; YANG simply provides a structured way to configure and query these addresses on network devices. It does not replace the underlying transport/addressing protocols, which remain essential for network reachability.
When this WOULD be correct
If the exam question asked about the evolution of network protocols and their roles in addressing schemes, or if it specifically inquired about the future of IP addressing, then option B could be correct in a context discussing the transition from IPv4 to IPv6.
- ✗
They remove the need for routing protocols
Why it's wrong here
Routing protocols (OSPF, BGP, IS-IS) determine paths through a network; YANG only standardizes how routing protocol configurations are expressed. Automation can deploy or modify routing through YANG-based APIs, but the routing protocols themselves still need to run on devices to exchange routes and forward traffic. YANG is a data modeling tool, not a substitute for network control-plane functionality.
When this WOULD be correct
In a question asking about the impact of automation on network architecture, if it stated that automation frameworks can streamline or simplify routing processes, this option could be considered correct in the context of discussing how certain automation tools might reduce the complexity of routing protocol management.
- ✗
They are used only for naming wireless SSIDs
Why it's wrong here
YANG is a general-purpose data modeling language for network management, not limited to wireless. While YANG models can describe Wi-Fi SSID configurations (e.g., IETF or vendor-specific models), they also model interfaces, routing, ACLs, QoS, and countless other network functions. Reducing YANG to SSID naming ignores its broad applicability across all network domains.
When this WOULD be correct
If the exam question asked specifically about the use of YANG in a context limited to wireless networking, such as configuring wireless access points or SSIDs, then option D could be correct. For example, a question might ask, 'What is a specific application of YANG in managing wireless network configurations?'
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓They define a structured way to represent configuration and state dataCorrect answer▾
Why this is correct
YANG defines a hierarchical, schema-based data model (RFC 6020/7950) that standardizes how configuration and operational state are represented, enabling programmatic access via NETCONF/RESTCONF. This structured representation allows automation tools to reliably validate, read, and modify device settings across vendors without ad-hoc CLI parsing.
✗They replace IPv4 and IPv6 addressingWrong answer — click to see why▾
Why this is wrong here
YANG data models do not replace IPv4 or IPv6 addressing; they are used to model configuration and state data for network devices, including IP addressing parameters, but the addressing schemes themselves remain unchanged.
★ When this WOULD be the correct answer
If the exam question asked about the evolution of network protocols and their roles in addressing schemes, or if it specifically inquired about the future of IP addressing, then option B could be correct in a context discussing the transition from IPv4 to IPv6.
Why candidates choose this
A student might confuse YANG with a protocol that modifies network layer addressing, or think that automation models can eliminate the need for traditional addressing, but YANG only structures how addressing is represented.
✗They remove the need for routing protocolsWrong answer — click to see why▾
Why this is wrong here
YANG data models do not remove the need for routing protocols; they can model routing protocol configurations, but the protocols themselves are still required for dynamic routing in networks.
★ When this WOULD be the correct answer
In a question asking about the impact of automation on network architecture, if it stated that automation frameworks can streamline or simplify routing processes, this option could be considered correct in the context of discussing how certain automation tools might reduce the complexity of routing protocol management.
Why candidates choose this
A test-taker might assume that automation and data models can replace dynamic routing by hardcoding routes, but YANG is about representation, not replacing functionality.
✗They are used only for naming wireless SSIDsWrong answer — click to see why▾
Why this is wrong here
YANG is a general-purpose data modeling language used for a wide range of network configurations, not limited to wireless SSIDs. It models interfaces, routing, security, and many other aspects of network devices.
★ When this WOULD be the correct answer
If the exam question asked specifically about the use of YANG in a context limited to wireless networking, such as configuring wireless access points or SSIDs, then option D could be correct. For example, a question might ask, 'What is a specific application of YANG in managing wireless network configurations?'
Why candidates choose this
A student with limited exposure to YANG might only have seen it used in wireless contexts, such as modeling SSID parameters, and incorrectly assume that is its sole purpose.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Visual reference
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
Go deeper
Related to this question
About these practice questions
One of 1,389 original 200-301 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-301 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 200-301 exam.