350-401 Network Assurance Practice Question
A network engineer is analyzing traffic flows on a Cisco Nexus switch and needs to collect NetFlow data. The engineer wants to export flow records to an external collector at 192.168.100.50 on port 2055. Which configuration step is required to enable NetFlow export?
⚠ Common exam trap
The trap here is applying IOS NetFlow commands like 'ip flow ingress' to a Nexus switch, which uses NX-OS and a different configuration model.
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
✓
Configure a flow exporter with the destination 192.168.100.50 and transport UDP 2055, then apply a flow monitor to the interface.
On Cisco Nexus switches, NetFlow export requires defining a flow exporter that specifies the collector's IP address and UDP port. A flow record defines the match and collect fields, and a flow monitor ties them together. The flow monitor is then applied to the interface. This modular approach is different from traditional IOS routers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use the 'netflow export destination 192.168.100.50 2055' command in global configuration mode and enable NetFlow on the management interface.
Why it's wrong here
The command 'netflow export destination' is not valid on Nexus switches. Nexus uses 'flow exporter' and 'flow monitor' commands. Also, enabling NetFlow on the management interface is not typical; it should be applied to data interfaces. This option is incorrect for NX-OS.
- ✓
Configure a flow exporter with the destination 192.168.100.50 and transport UDP 2055, then apply a flow monitor to the interface.
Why this is correct
On Cisco Nexus switches, NetFlow is configured using flow exporters, flow records, and flow monitors. The flow exporter defines the collector's IP address and UDP port. The flow monitor references the exporter and record, and is applied to an interface. This enables the export of flow data to the specified collector.
- ✗
Enable NetFlow on the interface with the 'ip flow ingress' command and specify the collector with 'ip flow-export destination 192.168.100.50 2055'.
Why it's wrong here
The 'ip flow ingress' and 'ip flow-export destination' commands are used on Cisco IOS routers, not on Nexus switches. Nexus uses a different configuration model with flow exporters, records, and monitors. This option mixes IOS and NX-OS syntax, which is incorrect for the scenario.
- ✗
Configure a NetFlow collector group with the destination 192.168.100.50 and port 2055, then enable NetFlow on the VLAN interface.
Why it's wrong here
Nexus does not use a 'collector group' concept for NetFlow. The correct approach is to define a flow exporter. Enabling NetFlow on a VLAN interface alone is insufficient; a flow monitor must be applied. This option describes a non-existent feature.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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