This 350-601 practice question tests your understanding of security. 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.
An engineer needs to secure the management plane on a Cisco Nexus 9000 switch. Which feature should be configured to restrict access to the switch's management interface based on source IP?
Enable DHCP snooping on the management VLAN.
Why wrong: DHCP snooping is for DHCP spoofing.
Enable port security on the management interface.
Why wrong: Port security is for end-user ports.
Configure AAA to require two-factor authentication.
Why wrong: AAA provides authentication but not source IP filtering.
Configure a management CoPP policy to rate-limit and permit only specific source IPs.
CoPP can filter management traffic to the switch.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Configure a management CoPP policy to rate-limit and permit only specific source IPs.
Option D is correct because a management Control Plane Policing (CoPP) policy on a Cisco Nexus 9000 switch allows the engineer to explicitly permit or deny traffic destined to the management interface based on source IP addresses. CoPP applies QoS policies to control plane traffic, effectively restricting management plane access by rate-limiting or dropping packets from unauthorized sources before they reach the CPU.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Enable DHCP snooping on the management VLAN.
Why it's wrong here
DHCP snooping is for DHCP spoofing.
Enable port security on the management interface.
Why it's wrong here
Port security is for end-user ports.
Configure AAA to require two-factor authentication.
Why it's wrong here
AAA provides authentication but not source IP filtering.
Configure a management CoPP policy to rate-limit and permit only specific source IPs.
Why this is correct
CoPP can filter management traffic to the switch.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Cisco often tests the distinction between data-plane security features (DHCP snooping, port security) and control-plane security mechanisms (CoPP), leading candidates to mistakenly choose a Layer 2 feature for a management plane access restriction question.
Detailed technical explanation
CoPP uses a modular QoS CLI (MQC) to classify control plane traffic via class maps matching ACLs (e.g., permit tcp host 10.1.1.1 any eq 22) and applies a police action (e.g., drop or rate-limit) in a service policy attached to the control plane. On Nexus 9000 switches, the 'control-plane' configuration mode allows separate policies for management and routing protocol traffic, ensuring that only permitted source IPs can reach the mgmt0 interface or the management VRF. A real-world scenario is restricting SSH access to the management interface to a jump-box subnet while allowing SNMP from a monitoring server, preventing brute-force attacks from the production network.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
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FAQ
Security — This question tests Security — Read the scenario before looking for a memorised answer..
The correct answer is: Configure a management CoPP policy to rate-limit and permit only specific source IPs. — Option D is correct because a management Control Plane Policing (CoPP) policy on a Cisco Nexus 9000 switch allows the engineer to explicitly permit or deny traffic destined to the management interface based on source IP addresses. CoPP applies QoS policies to control plane traffic, effectively restricting management plane access by rate-limiting or dropping packets from unauthorized sources before they reach the CPU.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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