350-501 Automation and Quality of Services Practice Question
In NSO, which statement best describes the function of the CDB (Configuration Database)?
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
✓
It holds the configuration and operational data of managed devices, acting as a centralized datastore.
CDB stores the intended configuration and operational state for managed devices, enabling NSO to compare and sync with actual device configurations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It translates NETCONF RPCs to device-specific CLI commands.
Why it's wrong here
That is the role of NED, not CDB.
- ✗
It stores YANG models for service definition.
Why it's wrong here
YANG models are stored separately; CDB holds instance data.
- ✓
It holds the configuration and operational data of managed devices, acting as a centralized datastore.
Why this is correct
CDB is the transactional database for device configurations.
- ✗
It provides a northbound API for OSS/BSS integration.
Why it's wrong here
Northbound API is separate; CDB is the datastore.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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