mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: An engineer configures Flexible NetFlow on a…
An engineer configures Flexible NetFlow on a Cisco router to monitor traffic on GigabitEthernet0/1. The flow record is defined with 'match ipv4 source address' and 'collect counter bytes'. The flow exporter sends data to 192.168.1.10:2055. After applying the monitor to the interface, 'show flow monitor name MONITOR cache' shows zero entries. What is the most likely root cause?
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 monitor is applied in the wrong direction.
Flexible NetFlow requires a flow monitor to be applied to an interface in the correct direction (ingress or egress). If the direction is not specified, the default is ingress. If traffic is only egress, the monitor will not capture any flows.
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 flow exporter is not configured with a source interface.
Why it's wrong here
A missing source interface would affect export, not cache population.
- ✓
The flow monitor is applied in the wrong direction.
Why this is correct
If the monitor is applied ingress but traffic is egress, no flows are recorded. The engineer should check the direction.
- ✗
The flow record does not include 'match ipv4 protocol'.
Why it's wrong here
A record with only source address and bytes is valid; missing protocol does not prevent flow creation.
- ✗
The collector is unreachable, causing the router to stop caching flows.
Why it's wrong here
Unreachable collector does not stop flow cache population; flows are still generated and cached.
Go deeper
Related to this question
About these practice questions
One of 1,966 original 300-410 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
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.