hardMultiple SelectObjective-mapped
300-410 Practice Question: An engineer configures Flexible NetFlow with a…
An engineer configures Flexible NetFlow with a user-defined flow record that includes 'match ipv4 source address' and 'collect counter bytes'. Which TWO additional statements about this configuration are true? (Choose TWO.)
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 'match ipv4 source address' command defines a key field that is used to uniquely identify flows.
In Flexible NetFlow, the 'match' fields define the flow key; flows are uniquely identified by the combination of all match fields. The 'collect' fields define non-key data that is aggregated per flow. The flow record must be referenced by a flow monitor, which is then applied to an interface. The default flow record is 'netflow-original', which includes many default keys. The 'match' fields cannot be omitted; at least one match field is required. The 'collect' fields are optional and can include counters, timestamps, etc.
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 record must be applied directly to an interface using the 'ip flow record' command.
Why it's wrong here
Incorrect. The flow record is not applied directly to an interface. It is referenced by a flow monitor, which is then applied to the interface via 'ip flow monitor'.
- ✓
The 'match ipv4 source address' command defines a key field that is used to uniquely identify flows.
Why this is correct
Correct. Match fields are key fields; flows are differentiated based on their values. Here, only the source IP is used as a key.
- ✓
The 'collect counter bytes' command causes the router to count the total number of bytes for each unique flow.
Why this is correct
Correct. The 'collect counter bytes' field is a non-key field that accumulates the byte count for each flow key.
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If no 'match' commands are configured, the router will use the default match fields from the 'netflow-original' record.
Why it's wrong here
Incorrect. A user-defined flow record must include at least one 'match' command; otherwise, the configuration is rejected.
- ✗
The flow record can be used by both IPv4 and IPv6 traffic simultaneously without additional configuration.
Why it's wrong here
Incorrect. Flow records are protocol-specific. To monitor both IPv4 and IPv6, you need separate flow records (e.g., 'match ipv4 ...' and 'match ipv6 ...') or use the 'ip' keyword for both.
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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.