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mediummultiple choiceObjective-mapped

A penetration tester is analyzing a Python script that uses the 'scapy' library. The script contains the line: `packet = IP(dst='10.0.0.1')/TCP(dport=80, flags='S')`. The tester then uses `sr1(packet, timeout=2)`. What is the primary purpose of this code?

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A penetration tester is analyzing a Python script that uses the 'scapy' library. The script contains the line: `packet = IP(dst='10.0.0.1')/TCP(dport=80, flags='S')`. The tester then uses `sr1(packet, timeout=2)`. What is the primary purpose of this code?

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Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Best answer

Perform a TCP SYN scan to determine if port 80 is open

The SYN packet is sent; if a SYN-ACK is received, the port is open. This is a stealthy port scan technique.

B

Distractor review

Perform a DNS resolution for the target IP

DNS resolution is not performed with TCP SYN packets; it uses UDP or TCP on port 53.

C

Distractor review

Send a TCP ACK packet to test firewall rules

The flags are set to 'S' (SYN), not 'A' (ACK), so this is not an ACK scan.

D

Distractor review

Complete a full TCP three-way handshake

A three-way handshake requires sending SYN, receiving SYN-ACK, and then sending ACK. This script only sends SYN and receives a response; it does not complete the handshake.

Common exam trap

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Technical deep dive

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • 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.

Related practice questions

Related PT0-002 practice-question pages

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More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

Question 1

A penetration tester is writing the executive summary for a report. The client's CEO needs to understand the business impact of a critical SQL injection vulnerability. Which of the following should the tester include?

Question 2

A penetration tester has gained a low-privileged shell on a Linux server. During enumeration, the tester discovers a binary with the SUID bit set that belongs to root and is known to have a buffer overflow vulnerability. What is the MOST effective next step to escalate privileges?

Question 3

A penetration tester is performing passive reconnaissance against a target domain. Which of the following resources can be used to gather information about the target without directly sending packets to the target's network? (Select two.) (Choose 2.)

Question 4

A penetration tester has obtained a TGT from a domain controller by cracking the krbtgt hash. Which attack can the tester now perform to gain persistent administrative access to any resource in the domain?

Question 5

A penetration tester is writing the executive summary for the final report. The CEO needs to understand the overall risk level and the business impact of the findings. Which of the following should be included in the executive summary?

Question 6

A penetration tester is writing the executive summary of a penetration test report. Which of the following elements is MOST important to include for a non-technical audience?

FAQ

Questions learners often ask

What does this PT0-002 question test?

Read the scenario before looking for a memorised answer.

What is the correct answer to this question?

The correct answer is: Perform a TCP SYN scan to determine if port 80 is open — The code crafts a SYN packet (flags='S') and sends it to the target IP on port 80, waiting for a response with sr1. This is a typical TCP SYN scan to check if the port is open (if a SYN-ACK is received). Option A correctly identifies this. Option B is DNS resolution (not using scapy like this). Option C is incorrect because flags='S' is SYN, not ACK. Option D is incorrect because a three-way handshake requires more packets.

What should I do if I get this PT0-002 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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