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200-201 Practice Question: Which command-line tool is used to capture and…

Which command-line tool is used to capture and analyze network packets in real time?

⚠ Common exam trap

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.

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

✓

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.

Answer analysis

Option-by-option breakdown

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.

  • ✗

    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.

About these practice questions

This 200-201 question is part of Courseiva's 979-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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.