- A
Source port
Why wrong: Source port indicates the port used by the source, not the volume.
- B
Destination IP
Why wrong: Destination IP identifies the target but not the data volume.
- C
Bytes transferred
High byte counts to an external IP may indicate exfiltration.
- D
Packet count
Why wrong: Packet count can be high even with small packets; bytes are more direct for volume.
Question 634 of 1,000
200-201 Security Monitoring Practice Question
This 200-201 practice question tests your understanding of security monitoring. 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 security analyst is using NetFlow data to investigate a potential data exfiltration incident. Which NetFlow metric is most useful for identifying large volumes of data being transferred to an external IP address?
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
✓
Bytes transferred
Option C is correct because the 'Bytes transferred' metric in NetFlow directly quantifies the volume of data sent to a specific destination IP. In a data exfiltration scenario, an unusually high byte count to an external IP is a strong indicator of large-scale data transfer, whereas other metrics like source port or packet count do not directly measure data volume.
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.
- ✗
Source port
Why it's wrong here
Source port indicates the port used by the source, not the volume.
- ✗
Destination IP
Why it's wrong here
Destination IP identifies the target but not the data volume.
- ✓
Bytes transferred
Why this is correct
High byte counts to an external IP may indicate exfiltration.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Packet count
Why it's wrong here
Packet count can be high even with small packets; bytes are more direct for volume.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that packet count is equivalent to data volume, but the trap here is that packet count ignores packet size, making bytes transferred the definitive metric for data volume in exfiltration analysis.
Detailed technical explanation
How to think about this question
NetFlow records include fields like 'bytes' (Layer 3 payload length) and 'packets', but bytes transferred is the sum of all packet payload sizes in the flow. In practice, a security analyst might set a threshold on bytes per flow (e.g., >10 MB to a single external IP) to trigger alerts, as exfiltration often involves sustained large transfers. Cisco's NetFlow v9 and IPFIX (RFC 7011) both export this field as a 64-bit counter, allowing precise tracking of multi-gigabyte transfers.
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 200-201 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.
- →
Security Monitoring — study guide chapter
Learn the concepts, then practise the questions
- →
Security Monitoring practice questions
Targeted practice on this topic area only
- →
All 200-201 questions
1,000 questions across all exam domains
- →
Cisco CyberOps Associate 200-201 study guide
Full concept coverage aligned to exam objectives
- →
200-201 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related 200-201 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Security Monitoring practice questions
Practise 200-201 questions linked to Security Monitoring.
Network Intrusion Analysis practice questions
Practise 200-201 questions linked to Network Intrusion Analysis.
Security Policies and Procedures practice questions
Practise 200-201 questions linked to Security Policies and Procedures.
Host-Based Analysis practice questions
Practise 200-201 questions linked to Host-Based Analysis.
Security Concepts practice questions
Practise 200-201 questions linked to Security Concepts.
200-201 fundamentals practice questions
Practise 200-201 questions linked to 200-201 fundamentals.
200-201 scenario practice questions
Practise 200-201 questions linked to 200-201 scenario.
200-201 troubleshooting practice questions
Practise 200-201 questions linked to 200-201 troubleshooting.
Practice this exam
Start a free 200-201 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this 200-201 question test?
Security Monitoring — This question tests Security Monitoring — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Bytes transferred — Option C is correct because the 'Bytes transferred' metric in NetFlow directly quantifies the volume of data sent to a specific destination IP. In a data exfiltration scenario, an unusually high byte count to an external IP is a strong indicator of large-scale data transfer, whereas other metrics like source port or packet count do not directly measure data volume.
What should I do if I get this 200-201 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 →
Last reviewed: Jul 4, 2026
This 200-201 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 200-201 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.