Deploying Cisco Service Provider Core Network Technologies (SPCORE, legacy) — Question 9

What is a primary difference between QoS operations on IOS and IOS XR?

Answer options

• A. IOS XR features multi-level LLQ
• B. IOS XR automatically polices the LLQ
• C. IOS XR does not support NBAR
• D. IOS XR cannot set FR-DE

Correct answer: B

Explanation

The correct answer is B because IOS XR has the capability to automatically manage LLQ, enhancing traffic prioritization without manual intervention. Options A and C are incorrect as they describe features that are present in IOS XR, while option D refers to a capability that is unrelated to QoS operations between the two platforms.