200-901 Cisco Platforms and Development Practice Question
A network automation engineer is evaluating options for model-driven programmability on Cisco devices. Which THREE are valid YANG model sources or tools? (Choose three.)
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
✓
pyang
pyang is a YANG tool, yangcatalog.org is a repository, and Cisco native models are valid sources. OpenConfig is a standard, but oc-interfaces is a model, not a source/tool.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
pyang
Why this is correct
pyang is a YANG data modeling tool.
- ✗
NETCONF
Why it's wrong here
NETCONF is a protocol, not a YANG model source/tool.
- ✓
Cisco native YANG models
Why this is correct
Cisco provides native YANG models for its devices.
- ✓
yangcatalog.org
Why this is correct
A YANG model repository.
- ✗
oc-interfaces
Why it's wrong here
This is a specific OpenConfig model, not a source or tool.
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Written by Johnson Ajibi, MSc IT Security
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