- A
Brute-forcing web application login credentials.
Why wrong: Brute-forcing typically involves submitting many login attempts with different credentials. The script's use of session tokens and API requests suggests a more targeted approach against API endpoints, not a brute-force attack.
- B
Exploiting an API by manipulating request parameters and observing responses.
The script dynamically extracts session tokens and reuses them, which is common when testing APIs for parameter manipulation, privilege escalation, or injection flaws. It allows the tester to bypass authentication and test authenticated endpoints.
- C
Performing a SQL injection attack on a web form.
Why wrong: SQL injection usually involves injecting malicious SQL strings into input fields. The script's use of JSON parsing and token management does not align with classic SQL injection payloads.
- D
Conducting a directory traversal attack to read arbitrary files.
Why wrong: Directory traversal attacks typically manipulate file paths in requests. The script focuses on API interactions and tokens, not file reading.
Quick Answer
The answer is exploiting an API by manipulating request parameters and observing responses. This is correct because the described PowerShell script uses Invoke-WebRequest and Invoke-RestMethod to interact with a web service, parsing JSON responses to extract session tokens and then reusing those tokens in subsequent calls—a classic pattern of PowerShell API token manipulation. Rather than directly attacking authentication or injecting SQL, the attacker modifies request parameters such as headers, query strings, or payload, then observes how the API responds to infer vulnerabilities or escalate privileges. On the CompTIA PenTest+ PT0-002 exam, this scenario tests your ability to recognize API manipulation as distinct from token hijacking or injection attacks; a common trap is confusing token reuse with session fixation. Remember the memory tip: “Modify and observe—API manipulation is the curve you should serve.”
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 analyzing a PowerShell script that uses Invoke-WebRequest and Invoke-RestMethod to interact with a target web service. The script parses JSON responses to extract session tokens and then uses those tokens in subsequent requests. Which attack technique is this script most likely performing?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
Exploiting an API by manipulating request parameters and observing responses.
The script uses Invoke-WebRequest and Invoke-RestMethod to interact with a web service, parsing JSON responses to extract session tokens and reusing them in subsequent requests. This pattern is characteristic of API manipulation, where an attacker modifies request parameters (e.g., headers, query strings, or payload) and observes how the API responds to infer vulnerabilities or escalate privileges, rather than directly attacking authentication or injecting SQL.
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.
- ✗
Brute-forcing web application login credentials.
Why it's wrong here
Brute-forcing typically involves submitting many login attempts with different credentials. The script's use of session tokens and API requests suggests a more targeted approach against API endpoints, not a brute-force attack.
- ✓
Exploiting an API by manipulating request parameters and observing responses.
Why this is correct
The script dynamically extracts session tokens and reuses them, which is common when testing APIs for parameter manipulation, privilege escalation, or injection flaws. It allows the tester to bypass authentication and test authenticated endpoints.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Performing a SQL injection attack on a web form.
Why it's wrong here
SQL injection usually involves injecting malicious SQL strings into input fields. The script's use of JSON parsing and token management does not align with classic SQL injection payloads.
- ✗
Conducting a directory traversal attack to read arbitrary files.
Why it's wrong here
Directory traversal attacks typically manipulate file paths in requests. The script focuses on API interactions and tokens, not file reading.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the use of Invoke-WebRequest and Invoke-RestMethod with brute-force attacks, but the script's focus on token extraction and reuse points to API parameter manipulation, not credential guessing.
Detailed technical explanation
How to think about this question
Under the hood, Invoke-WebRequest returns a BasicHtmlWebResponseObject that includes parsed HTML and headers, while Invoke-RestMethod automatically deserializes JSON/XML into PowerShell objects, making it ideal for API fuzzing. A subtle behavior is that session tokens extracted from JSON responses may be passed via the -Headers parameter (e.g., Authorization: Bearer <token>) or -Body parameter, allowing the tester to chain requests that bypass authentication checks or exploit IDOR vulnerabilities. In real-world scenarios, this technique is used to test REST APIs for broken object-level authorization (OWASP API1) by manipulating token-scoped parameters.
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 developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
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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Tools and Code Analysis — study guide chapter
Learn the concepts, then practise the questions
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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: Exploiting an API by manipulating request parameters and observing responses. — The script uses Invoke-WebRequest and Invoke-RestMethod to interact with a web service, parsing JSON responses to extract session tokens and reusing them in subsequent requests. This pattern is characteristic of API manipulation, where an attacker modifies request parameters (e.g., headers, query strings, or payload) and observes how the API responds to infer vulnerabilities or escalate privileges, rather than directly attacking authentication or injecting SQL.
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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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.
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