350-501 Architecture Practice Question
In IOS XR, what is the commit/rollback configuration model?
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 changes are staged and committed atomically; rollback is supported.
The commit/rollback model applies changes atomically and allows reverting to previous configurations if needed.
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 requires a reboot to apply changes.
Why it's wrong here
No reboot needed.
- ✗
Changes are applied immediately and cannot be undone.
Why it's wrong here
IOS XR supports rollback.
- ✓
Configuration changes are staged and committed atomically; rollback is supported.
Why this is correct
This is the correct description.
- ✗
It only applies to interface configurations.
Why it's wrong here
It applies to all configuration.
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