350-501 Automation and Quality of Services Practice Question
An SP uses NSO with a YANG service model to provision L3VPNs. Which database in NSO stores the configuration and state for all managed devices?
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
✓
Configuration Database (CDB)
NSO's CDB (Configuration Database) holds the configuration and state of all managed devices, acting as the authoritative data store.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Operational database
Why it's wrong here
Operational data is separate; CDB stores both config and operational state.
- ✗
YANG repository
Why it's wrong here
YANG models are stored, but the data is in CDB.
- ✗
NED database
Why it's wrong here
NEDs are device drivers, not a database.
- ✓
Configuration Database (CDB)
Why this is correct
CDB is the central database in NSO.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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