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300-410 Practice Question: The default CoPP policy on a Cisco IOS-XE router…

What is the default CoPP policy on a Cisco IOS-XE router if no service-policy is applied to the control-plane?

⚠ Common exam trap

Cisco often tests the misconception that CoPP has a built-in default policy or that management traffic is automatically rate-limited, when in fact no CoPP policy is applied unless explicitly configured under the control-plane with a service-policy.

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

No CoPP policy is applied; all control-plane traffic is processed without rate-limiting.

C is correct because Cisco IOS-XE routers do not apply any default CoPP policy to the control-plane. Without an explicit 'service-policy' configuration under the 'control-plane' configuration mode, all control-plane traffic (including routing protocols, management traffic, and keepalives) is processed by the route processor without any rate-limiting or filtering. CoPP is an optional feature that must be manually configured to protect the control plane from excessive 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.

  • All control-plane traffic is rate-limited to 64000 bps.

    Why it's wrong here

    Incorrect. No default policer exists.

  • Only management traffic (SSH, Telnet) is rate-limited to 32000 bps.

    Why it's wrong here

    Incorrect. No default CoPP policy is applied.

  • No CoPP policy is applied; all control-plane traffic is processed without rate-limiting.

    Why this is correct

    Correct. CoPP is not enabled by default.

  • A default policy is applied that drops all traffic exceeding 128000 bps.

    Why it's wrong here

    Incorrect. There is no default CoPP policy.

Visual reference

Source Router + ACL permit 10.0.0.0/8 deny any Server 10.0.0.5 ✓ 192.168.1.1 ✗ dropped ACLs evaluate top-down; first match wins — implicit deny all at end

Quick reference

Routing Protocol Comparison

ProtocolMetricMax HopsAlgorithmType
RIP v2Hop count15Bellman-FordDistance vector
OSPFCost (bandwidth)UnlimitedDijkstra (SPF)Link state
EIGRPComposite metricUnlimitedDUALHybrid
IS-ISCostUnlimitedDijkstraLink state
BGPPolicy / attributesUnlimitedPath vectorPath vector

RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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.