350-501 Architecture Practice Question
Which architecture feature of IOS XR ensures that a failure in one routing protocol process does not affect other processes on the same router?
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
✓
Process separation with each protocol as a separate process
IOS XR uses a distributed OS with process separation; each protocol runs as a separate process in its own memory space, providing fault isolation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Admin plane vs default SDR
Why it's wrong here
This is for administrative separation, not process isolation.
- ✗
Commit/rollback configuration model
Why it's wrong here
This is a configuration management feature.
- ✓
Process separation with each protocol as a separate process
Why this is correct
Process separation isolates failures.
- ✗
CPU and memory allocation per card
Why it's wrong here
This is hardware resource allocation.
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