mediumMultiple Choice
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show policy-map control-plane
Control Plane
Service-policy input: CoPP
class-map: MANAGEMENT (match-all) 5 packets, 500 bytes 5 minute offered rate 0 bps police: cir 8000 bps, bc 1500 bytes conformed 5 packets, 500 bytes; actions: transmit exceeded 0 packets, 0 bytes; actions: drop conformed 0 bps, exceed 0 bps
class-map: ATTACK (match-all) 100 packets, 10000 bytes 5 minute offered rate 0 bps police: cir 8000 bps, bc 1500 bytes conformed 0 packets, 0 bytes; actions: transmit exceeded 100 packets, 10000 bytes; actions: drop conformed 0 bps, exceed 0 bps
Based on this output, what is happening to traffic matching class ATTACK?
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
✓
All traffic in class ATTACK is being dropped.
The output shows that for class ATTACK, 100 packets were exceeded and dropped. This means the traffic rate exceeded the committed information rate (CIR) of 8000 bps, and all packets were dropped as per the exceed action.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
All traffic in class ATTACK is being transmitted.
Why it's wrong here
The counters show 100 exceeded packets with the drop action and zero conformed, so nothing in class ATTACK is transmitted. It tempts because the MANAGEMENT class transmits its traffic, but ATTACK's exceed action drops every packet instead.
- ✓
All traffic in class ATTACK is being dropped.
Why this is correct
The ATTACK class shows 100 packets offered, zero conformed and 100 exceeded, with the exceeded action set to drop. Every packet breached the 8000 bps committed rate, so the policer discarded the entire class rather than transmitting any portion of it.
- ✗
Traffic in class ATTACK is being rate-limited but not dropped.
Why it's wrong here
Rate-limiting here includes dropping: all 100 ATTACK packets exceeded the CIR and were dropped, with zero conformed. It tempts because policing is described as rate-limiting, but the exceed action in this policy is drop, so traffic is both limited and discarded.
- ✗
Traffic in class ATTACK is being marked down.
Why it's wrong here
The output shows exceeded packets taking the drop action, not any marking or set-dscp action; no marking is configured in this policy. It tempts because policing often pairs with marking, but here the exceed action is explicitly drop, so no packets are marked down.
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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.