The answer is to identify all open ports and services running on them. The `-sC` flag activates default NSE scripts that perform service enumeration and basic vulnerability checks, while `-sV` enables version detection to determine the specific software and version behind each open port. Together, these flags provide a comprehensive snapshot of a target’s exposed attack surface. On the CompTIA PenTest+ PT0-002 exam, this combination tests your understanding of reconnaissance techniques and the importance of service fingerprinting for later exploitation phases. A common trap is confusing `-sC` with `-sV` alone—remember that `-sC` adds enumeration scripts, not just version detection. The subsequent `grep 'open'` simply filters the output to show only active ports, confirming the script’s core goal. Memory tip: think “C for Checks, V for Version”—together they reveal what’s running and where.
PT0-002 Tools and Code Analysis Practice Question
This PT0-002 practice question tests your understanding of tools and code 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.
A penetration tester is reviewing a Bash script that uses 'nmap' with the '-sC' and '-sV' flags. The script runs the scan and saves the output to a text file. Later, the tester uses 'grep' to extract lines containing 'open'. What is the primary purpose of this script?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Identify all open ports and services running on them
The '-sC' flag runs default NSE scripts (which perform service enumeration and basic checks), and '-sV' enables version detection. Together, they identify open ports and the services/versions running on them. The subsequent 'grep' for 'open' extracts lines showing open ports, confirming the primary purpose is to enumerate open ports and their associated services.
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.
✓
Identify all open ports and services running on them
Why this is correct
This is the primary purpose of combining service detection and default scripts.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Perform a vulnerability scan using NSE scripts
Why it's wrong here
While default scripts may check for some vulnerabilities, the script's main focus is on port/service discovery due to the grep step.
✗
Detect the operating system of the target
Why it's wrong here
OS detection requires the `-O` flag, which is not used here.
✗
Perform a stealthy SYN scan
Why it's wrong here
A SYN scan uses `-sS`, not `-sC` and `-sV`.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the distinction between default NSE scripts (service enumeration) and vulnerability-specific scripts (e.g., 'vuln'), leading candidates to mistakenly think '-sC' implies vulnerability scanning.
Detailed technical explanation
How to think about this question
The '-sC' flag is equivalent to '--script=default', which includes scripts like 'banner', 'ssh-hostkey', and 'http-title' for service discovery, not vulnerability assessment. The '-sV' flag sends probes to determine service versions (e.g., Apache 2.4.41), which is critical for later exploitation but does not itself identify vulnerabilities. In real-world engagements, this combination is a standard first step in reconnaissance to map the attack surface before deeper testing.
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 security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PT0-002 question in full detail.
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: Identify all open ports and services running on them — The '-sC' flag runs default NSE scripts (which perform service enumeration and basic checks), and '-sV' enables version detection. Together, they identify open ports and the services/versions running on them. The subsequent 'grep' for 'open' extracts lines showing open ports, confirming the primary purpose is to enumerate open ports and their associated services.
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.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
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 →
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.
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.
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.