The answer is show policy-map control-plane, show control-plane, and show access-lists. These three CoPP verification commands are essential because they allow you to confirm that your control-plane policing policy is both applied and functioning correctly: show policy-map control-plane displays per-class packet and byte statistics for each class-map within the policy, show control-plane provides aggregate statistics for the entire control plane, and show access-lists verifies that the ACLs referenced in your class-maps are matching the intended traffic flows. On the Cisco CCNP ENARSI 300-410 exam, this question tests your ability to distinguish between commands that specifically monitor CoPP effectiveness versus general interface or routing commands—a common trap is selecting show interfaces or show ip route, which show unrelated counters or routing tables. For a quick memory tip, remember the three S’s: Statistics (policy-map), Summary (control-plane), and Source-matching (access-lists).
300-410 Control Plane Policing (CoPP) Practice Question
This 300-410 practice question tests your understanding of control plane policing (copp). 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.
Which THREE commands can be used to verify the operation and effectiveness of a CoPP policy on a Cisco IOS router? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
show policy-map control-plane
Common verification commands for CoPP include 'show policy-map control-plane' to view per-class statistics, 'show control-plane' to see aggregate control plane statistics, and 'show access-lists' to verify that ACLs used in CoPP are matching the intended traffic. 'show ip route' shows routing information, not CoPP statistics. 'show interfaces' shows interface counters, not control plane policing details.
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.
✓
show policy-map control-plane
Why this is correct
Correct. This command displays the CoPP policy and per-class packet/drop statistics.
Related concept
Standard ACLs match source addresses.
✓
show control-plane
Why this is correct
Correct. This command shows aggregate control plane statistics, including total packets received and dropped.
Related concept
Standard ACLs match source addresses.
✓
show access-lists
Why this is correct
Correct. ACLs are often used in CoPP class-maps; this command shows match counts to verify traffic classification.
Related concept
Standard ACLs match source addresses.
✗
show ip route
Why it's wrong here
Incorrect. This command displays the routing table, not CoPP statistics.
✗
show interfaces
Why it's wrong here
Incorrect. This command shows interface counters and errors, not control plane policing information.
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.
Trap categories for this question
Command / output trap
Incorrect. This command displays the routing table, not CoPP statistics.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
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) — This question tests Control Plane Policing (CoPP) — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: show policy-map control-plane — Common verification commands for CoPP include 'show policy-map control-plane' to view per-class statistics, 'show control-plane' to see aggregate control plane statistics, and 'show access-lists' to verify that ACLs used in CoPP are matching the intended traffic. 'show ip route' shows routing information, not CoPP statistics. 'show interfaces' shows interface counters, not control plane policing details.
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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