Question 459 of 1,000
Tools and Code AnalysiseasyMultiple ChoiceObjective-mapped

PT0-002 Tools and Code Analysis Practice Question

This PT0-002 practice question tests your understanding of tools and code analysis. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 tool would be best for capturing and analyzing network packets to troubleshoot a web application?

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

Wireshark

Wireshark is the correct tool because it is designed specifically for deep packet inspection, allowing you to capture live network traffic and analyze individual packets at multiple OSI layers. For troubleshooting a web application, you can filter HTTP/HTTPS requests and responses, examine TCP handshakes, and identify latency or payload issues, which is essential for diagnosing performance or functional problems.

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.

  • Nmap

    Why it's wrong here

    Nmap is for scanning, not packet analysis.

  • Wireshark

    Why this is correct

    Wireshark captures and analyzes packets.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Burp Suite

    Why it's wrong here

    Burp Suite is for web proxy, not general packet capture.

  • Aircrack-ng

    Why it's wrong here

    Aircrack-ng is for wireless security.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse Burp Suite (a web application proxy) with a packet analyzer, but Burp Suite operates at the application layer and does not capture raw network packets or provide low-level protocol analysis like Wireshark does.

Detailed technical explanation

How to think about this question

Wireshark uses libpcap (or WinPcap/Npcap on Windows) to capture raw frames from a network interface, then decodes them using protocol dissectors for hundreds of protocols including HTTP/1.1, HTTP/2, TLS, and TCP. A subtle behavior is that Wireshark can reassemble TCP streams and follow HTTP conversations, which is critical for seeing the full request/response payloads—something a simple tcpdump cannot do without post-processing. In a real-world scenario, a web application developer might use Wireshark to verify that the server is sending proper Cache-Control headers or to detect unexpected retransmissions causing slow page loads.

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 SOC analyst notices unusual lateral movement in the network at 2 AM. The IR playbook dictates: identify and contain (isolate the affected machine), then eradicate (remove the malware), then recover (restore from backup), then document. Skipping containment before eradication risks the attacker regaining access. Questions like this test the sequence and rationale of incident response phases.

Visual reference

Source Router + ACL permit 10.0.0.0/8 deny any Server 10.0.0.5 ✓ 192.168.1.1 ✗ dropped ACLs evaluate top-down; first match wins — implicit deny all at end

Quick reference

OSI Model Reference

LayerNamePDUKey Protocols / Devices
7ApplicationDataHTTP, HTTPS, DNS, SMTP, FTP, SSH
6PresentationDataTLS / SSL, JPEG, ASCII encoding
5SessionDataNetBIOS, RPC, SIP
4TransportSegment / DatagramTCP, UDP
3NetworkPacketIP, ICMP, OSPF — Routers
2Data LinkFrameEthernet, Wi-Fi, PPP — Switches, Bridges
1PhysicalBitsCables, NICs, Hubs, Repeaters

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 PT0-002 question test?

Tools and Code Analysis — This question tests Tools and Code Analysis — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Wireshark — Wireshark is the correct tool because it is designed specifically for deep packet inspection, allowing you to capture live network traffic and analyze individual packets at multiple OSI layers. For troubleshooting a web application, you can filter HTTP/HTTPS requests and responses, examine TCP handshakes, and identify latency or payload issues, which is essential for diagnosing performance or functional problems.

What should I do if I get this PT0-002 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.

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Last reviewed: Jul 4, 2026

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This PT0-002 practice question is part of Courseiva's free CompTIA 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 PT0-002 exam.