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NetFlow and Flexible NetFlow →hardMultiple SelectObjective-mapped

300-410 NetFlow and Flexible NetFlow Practice Question

This 300-410 practice question tests your understanding of netflow and flexible netflow. 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.

Which TWO statements about NetFlow version 9 and Flexible NetFlow export format are true? (Choose TWO.)

Question 1hardmulti select

Read the full network assurance explanation →

A
NetFlow version 9 uses a template-based architecture that allows the collector to dynamically learn the fields being exported.
Correct. Version 9 sends templates periodically; the collector uses them to parse the data records.
B
Flexible NetFlow can only export data using NetFlow version 5 format.
Why wrong: Incorrect. Flexible NetFlow uses NetFlow version 9 as the default export format; version 5 is not supported with Flexible NetFlow.
C
The default UDP port for NetFlow export is 2055.
Correct. Port 2055 is the IANA-assigned default for NetFlow export; many collectors use this port.
D
The template refresh interval is fixed at 20 minutes and cannot be changed.
Why wrong: Incorrect. The template refresh interval is configurable using the 'template timeout' command under the flow exporter (default is 30 minutes).
E
NetFlow version 9 supports only IPv4 flow data; IPv6 requires version 5.
Why wrong: Incorrect. Version 9 supports both IPv4 and IPv6 via separate templates; version 5 does not support IPv6 at all.

Full breakdown with real-world context →

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

✓

NetFlow version 9 uses a template-based architecture that allows the collector to dynamically learn the fields being exported.

NetFlow version 9 uses templates to define the format of exported data, which allows flexibility. Flexible NetFlow uses version 9 as its default export format. Version 5 has a fixed format and does not support templates. The exporter configuration includes the destination IP and UDP port (default 2055). The template refresh interval is configurable using the 'template timeout' command under the exporter. Version 9 supports both IPv4 and IPv6 in the same export stream via separate templates.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
NetFlow version 9 uses a template-based architecture that allows the collector to dynamically learn the fields being exported.
Why this is correct
Correct. Version 9 sends templates periodically; the collector uses them to parse the data records.
Related concept
Static NAT maps one inside address to one outside address.
✗
Flexible NetFlow can only export data using NetFlow version 5 format.
Why it's wrong here
Incorrect. Flexible NetFlow uses NetFlow version 9 as the default export format; version 5 is not supported with Flexible NetFlow.
✓
The default UDP port for NetFlow export is 2055.
Why this is correct
Correct. Port 2055 is the IANA-assigned default for NetFlow export; many collectors use this port.
Related concept
Static NAT maps one inside address to one outside address.
✗
The template refresh interval is fixed at 20 minutes and cannot be changed.
Why it's wrong here
Incorrect. The template refresh interval is configurable using the 'template timeout' command under the flow exporter (default is 30 minutes).
✗
NetFlow version 9 supports only IPv4 flow data; IPv6 requires version 5.
Why it's wrong here
Incorrect. Version 9 supports both IPv4 and IPv6 via separate templates; version 5 does not support IPv6 at all.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Trap categories for this question

Command / output trap
Incorrect. The template refresh interval is configurable using the 'template timeout' command under the flow exporter (default is 30 minutes).

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

Identify inside and outside interfaces first.
Check whether the scenario needs static NAT, dynamic NAT or PAT.
Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Real-world example

How this comes up in practice

A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.

What to study next

Got this wrong? Here's your next step.

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 300-410 NAT questions on configuration and troubleshooting.

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FAQ

Questions learners often ask

What does this 300-410 question test?

NetFlow and Flexible NetFlow — This question tests NetFlow and Flexible NetFlow — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: NetFlow version 9 uses a template-based architecture that allows the collector to dynamically learn the fields being exported. — NetFlow version 9 uses templates to define the format of exported data, which allows flexibility. Flexible NetFlow uses version 9 as its default export format. Version 5 has a fixed format and does not support templates. The exporter configuration includes the destination IP and UDP port (default 2055). The template refresh interval is configurable using the 'template timeout' command under the exporter. Version 9 supports both IPv4 and IPv6 in the same export stream via separate templates.

What should I do if I get this 300-410 question wrong?

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

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Last reviewed: Jun 19, 2026

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