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300-410 Practice Question: Which THREE commands can be used to verify the…
Which THREE commands can be used to verify the operation and effectiveness of a CoPP policy on a Cisco IOS router? (Choose THREE.)
⚠ Common exam trap
Cisco often tests that candidates confuse general show commands (like 'show interfaces' or 'show ip route') with CoPP-specific verification commands, expecting you to know that only commands referencing 'control-plane' or the policy-map applied to it provide direct verification.
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
✓
show policy-map control-plane
The 'show policy-map control-plane' command displays the applied policy map for the control plane, including class maps, match criteria, and action statistics (e.g., packets dropped or permitted). This directly verifies that the CoPP policy is active and how it is treating traffic.
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.
- ✓
show control-plane
Why this is correct
Correct. This command shows aggregate control plane statistics, including total packets received and dropped.
- ✓
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.
- ✗
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.
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