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300-410 Practice Question: The default CoPP classification for ARP packets…

What is the default CoPP classification for ARP packets on a Cisco IOS-XE device?

⚠ Common exam trap

Cisco often tests the misconception that ARP is treated as 'Normal' because it is a Layer 2 protocol, but the default CoPP classification explicitly places it in 'Critical' to prevent adjacency loss and ensure network stability.

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

✓

Critical

B is correct because on Cisco IOS-XE devices, ARP packets are classified under the 'Critical' control plane class by default. This ensures that ARP processing receives high priority to maintain Layer 2 connectivity and avoid adjacency timeouts, which could lead to network instability.

Answer analysis

Option-by-option breakdown

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

  • ✗

    Normal

    Why it's wrong here

    ARP is considered critical because it is required for basic connectivity.

  • ✓

    Critical

    Why this is correct

    ARP is classified as critical to ensure that address resolution is not starved by CoPP.

  • ✗

    Management

    Why it's wrong here

    Management traffic includes protocols like SSH and SNMP, not ARP.

  • ✗

    Best-effort

    Why it's wrong here

    Best-effort is for non-critical traffic; ARP is critical for network operation.

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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.