350-501 Architecture Practice Question
Which TWO of the following are characteristics of the IOS XR operating system architecture? (Select two.)
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
✓
Commit/rollback configuration model
IOS XR features a distributed OS and a commit/rollback configuration model.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configuration changes take effect immediately without commit
Why it's wrong here
IOS XR requires commit.
- ✓
Commit/rollback configuration model
Why this is correct
Changes are staged and committed.
- ✗
Monolithic kernel where all processes share memory
Why it's wrong here
IOS XR uses process separation.
- ✓
Distributed OS with process separation
Why this is correct
Each protocol runs as a separate process.
- ✗
All line cards run a single control plane process
Why it's wrong here
Control plane can be distributed.
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