- A
All management traffic is being transmitted without any drops.
Why wrong: 5 packets were dropped.
- B
Some management traffic is being dropped because it exceeds the configured police rate.
The exceeded counter shows 5 packets dropped.
- C
The management traffic is being rate-limited but no packets are dropped.
Why wrong: Drops are occurring.
- D
The police rate is too high, causing all traffic to be dropped.
Why wrong: Only 5 out of 100 packets were dropped.
Question 1,069 of 2,152
Control Plane Policing Verification
This 300-410 practice question tests your understanding of device management. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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) 100 packets, 5000 bytes 5 minute offered rate 0 bps police: 8000 bps, 1500 limit, 1500 extended limit conformed 95 packets, 4750 bytes; action: transmit exceeded 5 packets, 250 bytes; action: drop conformed 0 bps, exceed 0 bps
class-map: ROUTING (match-all) 200 packets, 10000 bytes 5 minute offered rate 0 bps police: 16000 bps, 3000 limit, 3000 extended limit conformed 200 packets, 10000 bytes; action: transmit exceeded 0 packets, 0 bytes; action: drop conformed 0 bps, exceed 0 bps
Based on this output, what is happening to traffic matching the MANAGEMENT class?
Quick Answer
The answer is that some management traffic is being dropped because it exceeds the configured police rate. This is evident from the show policy-map control-plane output, where the MANAGEMENT class has 100 offered packets, but only 95 conformed and were transmitted, while 5 packets exceeded the police rate of 8000 bps and were dropped. Control plane policing verification is critical for the Cisco CCNP ENARSI 300-410 exam, as it tests your ability to interpret how CoPP protects the router’s control plane from excessive traffic by applying a policer to specific class maps. A common trap is focusing only on the conformed packets and missing the exceeded counter, which directly indicates drops. Remember the memory tip: “Conformed goes through, exceeded is chewed”—the exceeded count always signals dropped traffic when the action is drop.
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
✓
Some management traffic is being dropped because it exceeds the configured police rate.
The output shows that the MANAGEMENT class has a police rate of 8000 bps. Out of 100 packets, 5 packets were exceeded and dropped because they exceeded this configured rate. This confirms that some management traffic is being dropped due to policing, making option B correct.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 management traffic is being transmitted without any drops.
Why it's wrong here
5 packets were dropped.
- ✓
Some management traffic is being dropped because it exceeds the configured police rate.
Why this is correct
The exceeded counter shows 5 packets dropped.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The management traffic is being rate-limited but no packets are dropped.
Why it's wrong here
Drops are occurring.
- ✗
The police rate is too high, causing all traffic to be dropped.
Why it's wrong here
Only 5 out of 100 packets were dropped.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between 'policing' (which drops excess traffic) and 'shaping' (which buffers excess traffic), and candidates may mistakenly think that a policer only rate-limits without dropping packets.
Detailed technical explanation
How to think about this question
Control Plane Policing (CoPP) uses a policer to rate-limit traffic destined to the router's control plane. The 'police' command uses a token bucket algorithm with a conformed burst (1500 bytes) and extended limit; packets exceeding the average rate (8000 bps) are dropped. In this case, the 5 dropped packets likely represent bursty management traffic (e.g., SSH or SNMP) that exceeded the configured burst size within the measurement interval.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this 300-410 question test?
Device Management — This question tests Device Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Some management traffic is being dropped because it exceeds the configured police rate. — The output shows that the MANAGEMENT class has a police rate of 8000 bps. Out of 100 packets, 5 packets were exceeded and dropped because they exceeded this configured rate. This confirms that some management traffic is being dropped due to policing, making option B correct.
What should I do if I get this 300-410 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jul 4, 2026
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