- A
NetFlow
Correct. NetFlow provides per-flow traffic statistics, enabling application-level bandwidth analysis.
- B
SNMP
Why wrong: SNMP monitors interface utilization and error counts, but does not provide per-flow details.
- C
Syslog
Why wrong: Syslog is used for logging system messages, not traffic flow analysis.
- D
ICMP
Why wrong: ICMP is used for error reporting and diagnostic tools like ping, not for traffic analysis.
Question 415 of 520
N10-009 Network Operations Practice Question
This N10-009 practice question tests your understanding of network operations. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
A network administrator needs to analyze bandwidth usage on a WAN link to determine which applications are generating the most traffic. The administrator requires detailed flow-level data including source/destination IP, ports, and protocol. Which technology should be used to collect this information?
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
NetFlow is the correct choice because it provides detailed flow-level data, including source and destination IP addresses, ports, and protocols, which is exactly what the administrator needs to analyze bandwidth usage per application on a WAN link. Unlike SNMP or Syslog, NetFlow captures per-flow metadata that allows identification of which applications are generating the most traffic.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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
Why this is correct
Correct. NetFlow provides per-flow traffic statistics, enabling application-level bandwidth analysis.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
SNMP
Why it's wrong here
SNMP monitors interface utilization and error counts, but does not provide per-flow details.
When this WOULD be correct
A network administrator needs to monitor overall bandwidth utilization and interface errors on a router over time, without requiring per-flow application details. SNMP polling with MIBs like IF-MIB would be appropriate.
- ✗
Syslog
Why it's wrong here
Syslog is used for logging system messages, not traffic flow analysis.
When this WOULD be correct
Syslog would be correct if the question asked for collecting and centralizing system logs (e.g., authentication failures, device errors) from network devices for security monitoring or troubleshooting, without needing traffic flow details.
- ✗
ICMP
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The N10-009 exam frequently reuses these exact scenarios with slightly different constraints.
✓NetFlowCorrect answer▾
Why this is correct
Correct. NetFlow provides per-flow traffic statistics, enabling application-level bandwidth analysis.
✗SNMPWrong answer — click to see why▾
Why this is wrong here
SNMP provides aggregate statistics (e.g., total bytes/packets) but not flow-level details like source/destination IP, ports, and protocol. It cannot identify individual application traffic flows.
★ When this WOULD be the correct answer
A network administrator needs to monitor overall bandwidth utilization and interface errors on a router over time, without requiring per-flow application details. SNMP polling with MIBs like IF-MIB would be appropriate.
Why candidates choose this
Candidates know SNMP is used for network monitoring and bandwidth usage, but they overlook that it lacks the granular flow-level data (IPs, ports, protocols) that NetFlow provides.
✗SyslogWrong answer — click to see why▾
Why this is wrong here
Syslog is used for logging system events and messages, not for collecting detailed flow-level data like source/destination IP, ports, and protocol. It lacks the granular traffic analysis capabilities required for this scenario.
★ When this WOULD be the correct answer
Syslog would be correct if the question asked for collecting and centralizing system logs (e.g., authentication failures, device errors) from network devices for security monitoring or troubleshooting, without needing traffic flow details.
Why candidates choose this
Candidates may confuse Syslog with NetFlow because both involve network monitoring and data collection, but Syslog focuses on event logs rather than traffic flows.
✗ICMPWrong answer — click to see why▾
Why this is wrong here
ICMP is used for network diagnostics (e.g., ping, traceroute) and does not provide flow-level data such as source/destination IP, ports, or protocol details needed for application traffic analysis.
★ When this WOULD be the correct answer
When the question asks for a tool to test basic network connectivity or measure round-trip time between hosts, ICMP (e.g., ping) would be the correct answer.
Why candidates choose this
Candidates may confuse ICMP with a traffic monitoring tool because it is commonly used in network troubleshooting and can indicate packet loss or latency, but it lacks the detailed flow information required.
Analysis generated from the official N10-009blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse SNMP's interface utilization statistics with the detailed per-flow data that NetFlow provides, leading them to choose SNMP when the question explicitly asks for source/destination IP, ports, and protocol.
Detailed technical explanation
How to think about this question
NetFlow, originally developed by Cisco, exports flow records containing key fields such as source/destination IP, source/destination port, protocol, ToS, and packet/byte counts. In a real-world scenario, an administrator could use NetFlow data to identify that a specific application (e.g., a video conferencing tool) is consuming 80% of WAN bandwidth, enabling targeted QoS policies. NetFlow v9 and IPFIX (RFC 7011) support flexible templates, allowing custom field definitions for deeper analysis.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the N10-009 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
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FAQ
Questions learners often ask
What does this N10-009 question test?
Network Operations — This question tests Network Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: NetFlow — NetFlow is the correct choice because it provides detailed flow-level data, including source and destination IP addresses, ports, and protocols, which is exactly what the administrator needs to analyze bandwidth usage per application on a WAN link. Unlike SNMP or Syslog, NetFlow captures per-flow metadata that allows identification of which applications are generating the most traffic.
What should I do if I get this N10-009 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
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