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350-601 Security Practice Question

Exhibit

Refer to the exhibit.

! Nexus 7000 CoPP policy
class-map type control-plane match-all COPP-CLASS-ARP
  match protocol arp
!
policy-map type control-plane COPP-POLICY
  class COPP-CLASS-ARP
    police cir 1000 bc 1000
      conform-action transmit
      exceed-action drop
!
control-plane
  service-policy input COPP-POLICY

! Output of 'show policy-map interface control-plane'
Control Plane
  service-policy input: COPP-POLICY

  class-map COPP-CLASS-ARP (match-all)
    462 packets, 462 bytes
    5 minute offered rate 2000 pps
    conform: 231 packets, 231 bytes
    exceed: 231 packets, 231 bytes

An engineer observes that ARP packets are being dropped. Based on the exhibit, what is the drop rate percentage for ARP packets?

⚠ Common exam trap

Cisco often tests the ability to correctly compute a percentage from raw drop and total counts, where candidates might misread the exhibit or confuse drop rate with success rate, leading to incorrect answers like 25% or 75%.

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

✓

50%

The exhibit shows that out of 1000 total ARP packets, 500 were dropped. The drop rate percentage is calculated as (dropped packets / total packets) * 100, which is (500/1000)*100 = 50%. Therefore, option C is correct.

Answer analysis

Option-by-option breakdown

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

  • ✗

    75%

    Why it's wrong here

    Incorrect calculation.

  • ✗

    25%

    Why it's wrong here

    Incorrect calculation.

  • ✓

    50%

    Why this is correct

    Half of the packets exceed the police rate and are dropped.

  • ✗

    100%

    Why it's wrong here

    Not all packets are dropped; some conform.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This 350-601 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 350-601 exam.