Quick Answer
The answer is HTTP, as the NetFlow data reveals a significantly higher volume of packets and bytes on TCP port 80, the default port for HTTP traffic. NetFlow records summarize network flows by aggregating packets that share the same source and destination IP, port, and protocol; when you see a disproportionate number of flows and bytes on a single port, that protocol is the dominant traffic type. On the Cisco CyberOps Associate 200-201 exam, this tests your ability to interpret NetFlow summaries for traffic analysis, often presented as a table or chart where you must identify the most prominent application layer protocol. A common trap is confusing port 80 with HTTPS (port 443) or assuming high packet counts always indicate a specific protocol like DNS—always check the port number first. Memory tip: “Port 80 is the heavy lifter—if bytes and flows are high there, HTTP is the dominant driver.”
This 200-201 practice question tests your understanding of security concepts. 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.
Refer to the exhibit. SrcAddr DstAddr SrcPort DstPort Proto Packets Bytes 10.0.0.1 10.0.0.2 12345 80 TCP 100 5000 10.0.0.1 10.0.0.3 54321 22 TCP 50 3000
Which type of traffic is most prominent in this NetFlow data?
Refer to the exhibit. SrcAddr DstAddr SrcPort DstPort Proto Packets Bytes 10.0.0.1 10.0.0.2 12345 80 TCP 100 5000 10.0.0.1 10.0.0.3 54321 22 TCP 50 3000
SSH
Why wrong: Port 22 is SSH, but has less traffic than port 80.
HTTP
Port 80 is HTTP and has the most packets and bytes.
DNS
Why wrong: No DNS port (53) is shown.
HTTPS
Why wrong: No port 443 is shown.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
HTTP
HTTP traffic is most prominent because the NetFlow data shows a high volume of packets and bytes on TCP port 80, which is the default port for HTTP. NetFlow records summarize traffic flows, and the large number of flows and bytes on port 80 indicates that HTTP is the dominant protocol in the captured data.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
SSH
Why it's wrong here
Port 22 is SSH, but has less traffic than port 80.
HTTP
Why this is correct
Port 80 is HTTP and has the most packets and bytes.
Related concept
Read the scenario before looking for a memorised answer.
DNS
Why it's wrong here
No DNS port (53) is shown.
HTTPS
Why it's wrong here
No port 443 is shown.
Common exam traps
Cisco often tests the ability to distinguish between HTTP and HTTPS by port number, and the trap here is that candidates might assume HTTPS is more common due to modern encryption trends, but the NetFlow data explicitly shows higher traffic on port 80.
Trap categories for this question
Command / output trap
No DNS port (53) is shown.
Detailed technical explanation
NetFlow exports flow records that include source/destination IPs, ports, protocol, and byte/packet counts. In this scenario, the high byte count on port 80 suggests large HTTP transfers (e.g., web pages or file downloads), whereas HTTPS would show encrypted payloads but similar port usage. A real-world scenario is network monitoring where HTTP traffic is often unencrypted and easier to inspect, making it a common target for bandwidth analysis.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Security Concepts — This question tests Security Concepts — Read the scenario before looking for a memorised answer..
The correct answer is: HTTP — HTTP traffic is most prominent because the NetFlow data shows a high volume of packets and bytes on TCP port 80, which is the default port for HTTP. NetFlow records summarize traffic flows, and the large number of flows and bytes on port 80 indicates that HTTP is the dominant protocol in the captured data.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 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.
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