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300-430 · Question #321

300-430 Question #321: Real Exam Question with Answer & Explanation

The correct answer is C: class map. In QoS configurations, the class map is required to identify and classify traffic flows before applying a policy map. Without the class map, the policy map has no defined traffic classes to match against, which leads to incorrect or missing QoS markings in the end-to-end traffic

Question

A wireless engineer completed the configuration of QoS on the WLC and the policy map on the switch that the WLC is connected. During testing, the engineer realizes that the markings are preserved in an incorrect way in the end-to-end traffic flow. What is missing from the configuration?

Options

  • ANetFlow
  • Bport channel
  • Cclass map
  • DACL

Explanation

In QoS configurations, the class map is required to identify and classify traffic flows before applying a policy map. Without the class map, the policy map has no defined traffic classes to match against, which leads to incorrect or missing QoS markings in the end-to-end traffic flow.

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