This PT0-002 practice question tests your understanding of planning and scoping. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 client hires a penetration testing firm to assess a web application that integrates with a third-party API for payment processing. The client wants to include the API endpoint in the test scope. What should the penetration tester do FIRST to ensure the test is conducted ethically and legally?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Obtain written authorization from the third-party API provider
Option B is correct because the penetration tester must obtain explicit written authorization from the third-party API provider before testing. Without this, testing the API endpoint could violate the Computer Fraud and Abuse Act (CFAA) or similar laws, as the tester would be accessing a system they do not own or have contractual permission to test. The client's scope inclusion does not grant legal access to the third-party's infrastructure.
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.
✗
Assume the client has already obtained permission from the API provider
Why it's wrong here
Assumptions can lead to legal violations; written proof from the provider is required.
✓
Obtain written authorization from the third-party API provider
Why this is correct
Formal permission from the API owner is necessary to avoid legal repercussions.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Rely on the client's statement that the API is within scope
Why it's wrong here
The client cannot grant permission for a third party's infrastructure.
✗
Test only the client's application code and ignore the API
Why it's wrong here
This would not fulfill the client's request to include the API in the test.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume the client's scope definition automatically covers third-party systems, but the exam tests the legal and ethical requirement to obtain explicit permission from the actual owner of the target system.
Detailed technical explanation
How to think about this question
Under the hood, third-party APIs are protected by terms of service (ToS) that explicitly prohibit unauthorized testing, often with clauses against penetration testing without prior written consent. In a real-world scenario, testing a payment gateway like Stripe or PayPal without authorization could trigger automated intrusion detection systems, resulting in account suspension, legal action, or even criminal charges under the CFAA. The tester should request a signed testing agreement or a letter of authorization from the API provider, specifying the IP ranges, test dates, and scope of activities.
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 analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PT0-002 question in full detail.
Planning and Scoping — This question tests Planning and Scoping — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Obtain written authorization from the third-party API provider — Option B is correct because the penetration tester must obtain explicit written authorization from the third-party API provider before testing. Without this, testing the API endpoint could violate the Computer Fraud and Abuse Act (CFAA) or similar laws, as the tester would be accessing a system they do not own or have contractual permission to test. The client's scope inclusion does not grant legal access to the third-party's infrastructure.
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: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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