350-501 Architecture Practice Question
In IOS XR, what is the primary purpose of 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
✓
To apply changes atomically and roll back if needed
The commit/rollback model allows changes to be applied atomically and rolled back if errors occur, ensuring configuration consistency.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To automatically back up configurations to a remote server
Why it's wrong here
Backup is separate; commit/rollback is about applying changes.
- ✗
To enforce role-based access control
Why it's wrong here
RBAC is separate from commit/rollback.
- ✓
To apply changes atomically and roll back if needed
Why this is correct
This is the core of the commit/rollback model.
- ✗
To verify configuration syntax before applying
Why it's wrong here
Syntax check is part of commit, but rollback is key.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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