- A
SSH, Telnet, and ICMP echo packets are rate-limited to 8000 bps; all other control-plane traffic is rate-limited to 64000 bps.
Correct. The class COPP-MGMT matches the ACL traffic and applies a 8000 bps policer. The class-default applies a 64000 bps policer to all other traffic.
- B
Only SSH and Telnet are rate-limited to 8000 bps; ICMP echo is not affected because it is matched by a different class.
Why wrong: Incorrect. The ACL includes ICMP echo, so it is also matched by class COPP-MGMT.
- C
All control-plane traffic is rate-limited to 64000 bps, because the class-default overrides the COPP-MGMT class.
Why wrong: Incorrect. The COPP-MGMT class is matched first and applies its own policer. Class-default only applies to traffic not matching any explicit class.
- D
The configuration is invalid because the class-map must be named 'COPP-CLASS' to be used in the policy-map.
Why wrong: Incorrect. The class-map name 'COPP-MGMT' is valid and properly referenced in the policy-map.
Quick Answer
The answer is that SSH, Telnet, and ICMP echo packets are rate-limited to 8000 bps, while all other control-plane traffic is rate-limited to 64000 bps. This is correct because the CoPP configuration interpretation hinges on the class-map matching access-list 100, which selects TCP ports 22 and 23 along with ICMP echo, and the policy-map applies a police rate of 8000 bps to that class, dropping any excess traffic. The class-default then catches all remaining control-plane traffic and limits it to a higher 64000 bps, ensuring that critical management protocols are throttled more aggressively than general traffic. On the Cisco CCNP ENARSI 300-410 exam, this tests your ability to read a CoPP policy and understand that the police command sets a committed information rate (CIR) in bits per second, not packets per second—a common trap where candidates misread the unit. A helpful memory tip: "Management gets the smaller pipe; everything else gets the bigger pipe."
300-410 Control Plane Policing (CoPP) Practice Question
This 300-410 practice question tests your understanding of control plane policing (copp). This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Examine the following CoPP configuration on a Cisco IOS-XE router:
!--- ACL to match traffic
access-list 100 permit tcp any any eq 22 access-list 100 permit tcp any any eq 23 access-list 100 permit icmp any any echo
! !--- Class-map class-map match-all COPP-MGMT match access-group 100 ! !--- Policy-map policy-map COPP-POLICY
class COPP-MGMT
police 8000 conform-action transmit exceed-action drop
class class-default
police 64000 conform-action transmit exceed-action drop ! !--- Apply to control-plane control-plane service-policy input COPP-POLICY
What is the effect of this configuration?
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
SSH, Telnet, and ICMP echo packets are rate-limited to 8000 bps; all other control-plane traffic is rate-limited to 64000 bps.
The policy limits SSH, Telnet, and ICMP echo traffic to 8000 bps, dropping excess. All other control-plane traffic is limited to 64000 bps. This protects the router from control-plane overload.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
SSH, Telnet, and ICMP echo packets are rate-limited to 8000 bps; all other control-plane traffic is rate-limited to 64000 bps.
Why this is correct
Correct. The class COPP-MGMT matches the ACL traffic and applies a 8000 bps policer. The class-default applies a 64000 bps policer to all other traffic.
Related concept
Standard ACLs match source addresses.
- ✗
Only SSH and Telnet are rate-limited to 8000 bps; ICMP echo is not affected because it is matched by a different class.
- ✗
All control-plane traffic is rate-limited to 64000 bps, because the class-default overrides the COPP-MGMT class.
Why it's wrong here
Incorrect. The COPP-MGMT class is matched first and applies its own policer. Class-default only applies to traffic not matching any explicit class.
- ✗
The configuration is invalid because the class-map must be named 'COPP-CLASS' to be used in the policy-map.
Why it's wrong here
Incorrect. The class-map name 'COPP-MGMT' is valid and properly referenced in the policy-map.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 300-410 ACL questions on filtering logic and placement.
- →
Control Plane Policing (CoPP) — study guide chapter
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FAQ
Questions learners often ask
What does this 300-410 question test?
Control Plane Policing (CoPP) — This question tests Control Plane Policing (CoPP) — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: SSH, Telnet, and ICMP echo packets are rate-limited to 8000 bps; all other control-plane traffic is rate-limited to 64000 bps. — The policy limits SSH, Telnet, and ICMP echo traffic to 8000 bps, dropping excess. All other control-plane traffic is limited to 64000 bps. This protects the router from control-plane overload.
What should I do if I get this 300-410 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 300-410 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jun 18, 2026
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.
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