350-501 Automation and Quality of Services Practice Question
An SP engineer is implementing LLQ on a PE router to prioritize voice. Which additional configuration is recommended to prevent voice traffic from starving other queues?
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
✓
Configure a policer on the LLQ class to limit its rate.
Policing within the LLQ class limits the amount of traffic that can use the priority queue, preventing starvation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure a policer on the LLQ class to limit its rate.
Why this is correct
Policing within LLQ is recommended to protect other classes.
- ✗
Use CBWFQ without LLQ.
Why it's wrong here
LLQ is needed for voice, but policing is still required.
- ✗
Disable queueing on other classes.
Why it's wrong here
That would not help.
- ✗
Set the priority queue bandwidth to 100%.
Why it's wrong here
This would starve other queues.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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