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300-410 Practice Question: The default CoPP policer action for packets that…

What is the default CoPP policer action for packets that exceed the committed information rate (CIR)?

⚠ Common exam trap

Cisco often tests the misconception that CoPP defaults to 'transmit' or 'remark' for excess traffic, but the default exceed action is always 'drop' unless explicitly changed in the policy-map.

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

✓

Drop

The default action for a Control Plane Policing (CoPP) policy-map class when traffic exceeds the committed information rate (CIR) is to drop the excess packets. This is because CoPP uses a single-rate, two-color policer by default, where packets conforming to the CIR are marked as 'conform' and transmitted, while packets exceeding the CIR are marked as 'exceed' and dropped. No default 'violate' action exists unless explicitly configured.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Transmit with best-effort

    Why it's wrong here

    Excess packets are dropped, not re-marked or transmitted.

  • ✓

    Drop

    Why this is correct

    The default policer action for exceeding traffic is to drop the packets.

  • ✗

    Set DSCP to 0

    Why it's wrong here

    Re-marking is not the default action; dropping is.

  • ✗

    Queue for later transmission

    Why it's wrong here

    Policing does not queue; it drops or transmits immediately.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.