The answer is that the CoPP police rate of 100000 bps is too low for the SNMP traffic from the management station. Control Plane Policing (CoPP) protects the router’s control plane by rate-limiting traffic, and when a class-map matches all traffic from a specific source IP—such as the management station—the police rate enforces a hard cap on bandwidth. SNMP polls, especially those querying many OIDs, can generate bursts that exceed 100000 bps, causing the policer to drop packets and resulting in timeouts. On the Cisco CCNP ENARSI 300-410 exam, this scenario tests your understanding of how CoPP police rates interact with application-layer protocols like SNMP over UDP 161; a common trap is assuming the rate is sufficient because the average traffic seems low, but bursty SNMP traffic easily exceeds the limit. Remember the memory tip: “SNMP bursts break CoPP’s burst—if polls drop, the rate must stop.”
300-410 Control Plane Policing (CoPP) Practice Question
This 300-410 practice question tests your understanding of control plane policing (copp). Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 router has a CoPP policy that includes a class-map matching all traffic from a specific source IP address (the management station) and polices it to 100000 bps. The engineer notices that SNMP polls from the management station are timing out. The SNMP traffic uses UDP port 161. The engineer checks the CoPP statistics and sees that the class for the management station has dropped packets. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The CoPP police rate of 100000 bps is too low for the SNMP traffic from the management station.
The CoPP policy is rate-limiting traffic from the management station to 100000 bps. SNMP polls can generate bursts of traffic, especially if the router has many OIDs to query. If the police rate is too low for the SNMP traffic, packets are dropped, causing timeouts.
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.
✓
The CoPP police rate of 100000 bps is too low for the SNMP traffic from the management station.
Why this is correct
SNMP polls can be bursty, and 100000 bps may not be sufficient, leading to drops and timeouts.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The SNMP community string is incorrect on the management station.
Why it's wrong here
This would cause authentication failures, not CoPP drops.
✗
The CoPP class-map is matching the wrong source IP address.
Why it's wrong here
The statistics show drops in that class, so it is matching correctly.
✗
The SNMP agent on the router is not responding due to high CPU.
Why it's wrong here
The drops are in CoPP, not due to high CPU.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
The statistics show drops in that class, so it is matching correctly.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Control Plane Policing (CoPP) — This question tests Control Plane Policing (CoPP) — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The CoPP police rate of 100000 bps is too low for the SNMP traffic from the management station. — The CoPP policy is rate-limiting traffic from the management station to 100000 bps. SNMP polls can generate bursts of traffic, especially if the router has many OIDs to query. If the police rate is too low for the SNMP traffic, packets are dropped, causing timeouts.
What should I do if I get this 300-410 question wrong?
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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