350-501 Architecture Practice Question
Which TWO are key features of IOS XR architecture? (Choose 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
✓
Distributed OS with process separation
IOS XR is a distributed OS with process separation and a commit/rollback model. Monolithic kernel and shared memory are not features.
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 applied immediately without validation
Why it's wrong here
Changes require commit with validation.
- ✗
Monolithic kernel with shared memory address space
Why it's wrong here
IOS XR uses microkernel with process separation.
- ✓
Distributed OS with process separation
Why this is correct
Each process runs independently.
- ✗
Single process for all routing protocols
Why it's wrong here
Each protocol is a separate process.
- ✓
Commit/rollback configuration model
Why this is correct
Atomic commits with automatic rollback on failure.
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