This 350-401 practice question tests your understanding of netflow and telemetry. 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.
Examine the following configuration:
flow record REC-1
match ipv4 source address
match ipv4 destination address
match ipv4 protocol
collect interface input
collect interface output
collect counter bytes
collect counter packets
!
flow monitor MON-1
record REC-1
exporter EXPORTER-1
!
interface GigabitEthernet0/1
ip flow monitor MON-1 input
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
It collects NetFlow data for incoming traffic, including source/destination IP, protocol, and byte/packet counts.
This configuration defines a custom flow record that captures key fields (source/destination IP, protocol) and collects interface and counter information. The flow monitor applies this record to incoming traffic on GigabitEthernet0/1.
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.
✓
It collects NetFlow data for incoming traffic, including source/destination IP, protocol, and byte/packet counts.
Why this is correct
The match and collect statements define the fields to be recorded; the monitor applies to input traffic.
Related concept
Static NAT maps one inside address to one outside address.
✗
It collects NetFlow data for both incoming and outgoing traffic on the interface.
Why it's wrong here
Only the 'input' keyword is used; output traffic is not monitored.
✗
It configures Flexible NetFlow with a user-defined record that includes TCP flags.
Why it's wrong here
TCP flags are not included in this record; they would require a 'match tcp flags' statement.
✗
It sends flow data to the exporter using IPFIX format.
Why it's wrong here
The record type is not specified; by default, NetFlow v9 is used, not IPFIX.
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
Keyword trap
Only the 'input' keyword is used; output traffic is not monitored.
Command / output trap
Only the 'input' keyword is used; output traffic is not monitored.
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 350-401 NAT questions on configuration and troubleshooting.
NetFlow and Telemetry — This question tests NetFlow and Telemetry — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: It collects NetFlow data for incoming traffic, including source/destination IP, protocol, and byte/packet counts. — This configuration defines a custom flow record that captures key fields (source/destination IP, protocol) and collects interface and counter information. The flow monitor applies this record to incoming traffic on GigabitEthernet0/1.
What should I do if I get this 350-401 question wrong?
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 350-401 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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