mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show flow exporter EXPORTER-1
Flow Exporter EXPORTER-1: Description: Exports to collector Export protocol: NetFlow Version 9 Transport Configuration: Destination IP address: 192.168.1.100 Source IP address: 10.0.0.1 Transport Protocol: UDP Destination Port: 2055 Source Port: 0 Collector Configuration: VRFs: Default Options Configuration: Sampler: Not configured Export Statistics: Number of Flows exported: 0 Number of Packets exported: 0 Number of Source IP address unreachable: 0 Number of Packets dropped: 0
Based on this output, what is the most likely reason that no flows are being exported?
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
✓
The flow exporter is not referenced in any flow monitor applied to an interface.
The output shows 0 flows exported, but no errors. This often indicates that the flow monitor is not applied to an interface or the exporter is not referenced in a flow monitor. The exporter itself is configured correctly with a valid destination.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The destination port is incorrect; NetFlow version 9 requires port 9996.
Why it's wrong here
NetFlow version 9 commonly uses UDP port 2055, not 9996.
- ✓
The flow exporter is not referenced in any flow monitor applied to an interface.
Why this is correct
The exporter statistics show no flows exported, but no errors, meaning the exporter is idle. This typically occurs when no flow monitor using this exporter is applied to an interface.
- ✗
The source IP address is not reachable from the destination.
Why it's wrong here
If the source IP were unreachable, the 'Number of Source IP address unreachable' counter would increment, but it is 0.
- ✗
The sampler is not configured, causing all packets to be dropped.
Why it's wrong here
A sampler is optional; without it, all packets are sampled by default. This does not cause drops.
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Variation 1. A network engineer runs the following command on Router R1: R1# show flow exporter EXPORTER-1 statistics Flow Exporter: EXPORTER-1 Packet send statistics (last 30 seconds): Packets sent: 0 Packets dropped: 0 Packets unsent: 0 Client send statistics: Packets sent: 0 Packets dropped: 0 Packets unsent: 0 Export statistics: Number of Flows exported: 0 Number of Packets exported: 0 Number of Source IP address unreachable: 0 Number of Packets dropped (no route): 0 Number of Packets dropped (queue full): 0 Based on this output, what is the most likely cause of no exports?
medium- A.The destination IP address is unreachable.
- ✓ B.The flow exporter is not referenced in any flow monitor, or the flow monitor is not attached to an interface.
- C.The UDP port is blocked by a firewall.
- D.The source IP address is not configured on any interface.
Why B: The exporter statistics show no flows exported and no errors. This typically means the exporter is not receiving any flows from a flow monitor, likely because the flow monitor is not attached to an interface or the flow monitor does not reference this exporter.
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.