Quick Answer
The answer is tcpdump, the command-line tool used to capture and analyze network packets in real time. This is correct because tcpdump leverages the libpcap library to intercept raw packets directly from the network interface, allowing it to display packet headers and payloads in real time without requiring a graphical interface. On the Cisco CyberOps Associate 200-201 exam, this question tests your ability to distinguish between command-line and GUI-based packet capture tools, often appearing alongside Wireshark as a distractor—remember that tcpdump is the go-to for scripting and remote sessions where a GUI is unavailable. A common trap is confusing tcpdump with tshark, but tcpdump is the native, lightweight tool for real-time terminal analysis. Memory tip: think “dump the packets from the terminal” to recall tcpdump’s core function.
This 200-201 practice question tests your understanding of network intrusion analysis. 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.
Which command-line tool is used to capture and analyze network packets in real time?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Wireshark
Why wrong: Incorrect. Wireshark is a GUI tool, not command-line.
tcpdump
Correct. tcpdump is a command-line packet capture utility.
Nmap
Why wrong: Incorrect. Nmap is a network scanner, not a packet capture tool.
Nessus
Why wrong: Incorrect. Nessus is a vulnerability scanner.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
tcpdump
tcpdump is a command-line packet analyzer that captures and displays network packets in real time directly from the terminal. It uses libpcap to intercept raw packets at the network interface, making it ideal for scripting and remote session analysis where a GUI is unavailable.
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.
Wireshark
Why it's wrong here
Incorrect. Wireshark is a GUI tool, not command-line.
tcpdump
Why this is correct
Correct. tcpdump is a command-line packet capture utility.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Nmap
Why it's wrong here
Incorrect. Nmap is a network scanner, not a packet capture tool.
Nessus
Why it's wrong here
Incorrect. Nessus is a vulnerability scanner.
Common exam traps
Cisco often tests the distinction between command-line and GUI tools, trapping candidates who know Wireshark is a packet analyzer but forget the question explicitly asks for a command-line tool.
Trap categories for this question
Command / output trap
Incorrect. Wireshark is a GUI tool, not command-line.
Detailed technical explanation
tcpdump uses Berkeley Packet Filter (BPF) syntax to filter packets at the kernel level before they reach user space, minimizing overhead and allowing precise capture of specific traffic (e.g., 'tcp port 80'). In a real-world incident response scenario, an analyst might run 'tcpdump -i eth0 -w capture.pcap' to log traffic for later analysis, then use 'tcpdump -r capture.pcap' to replay and inspect packets without disrupting the live network.
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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Network Intrusion Analysis — study guide chapter
Learn the concepts, then practise the questions
Network Intrusion Analysis practice questions
Targeted practice on this topic area only
All 200-201 questions
507 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
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise 200-201 questions linked to Security Policies and Procedures.
Practise 200-201 questions linked to Security Concepts.
Practise 200-201 questions linked to Security Monitoring.
Practise 200-201 questions linked to Host-Based Analysis.
Practise 200-201 questions linked to Network Intrusion Analysis.
Practise 200-201 questions linked to 200-201 fundamentals.
Practise 200-201 questions linked to 200-201 scenario.
Practise 200-201 questions linked to 200-201 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Network Intrusion Analysis — This question tests Network Intrusion Analysis — Read the scenario before looking for a memorised answer..
The correct answer is: tcpdump — tcpdump is a command-line packet analyzer that captures and displays network packets in real time directly from the terminal. It uses libpcap to intercept raw packets at the network interface, making it ideal for scripting and remote session analysis where a GUI is unavailable.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
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: 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.
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.