- A
Grey box test
Why wrong: Grey box tests provide partial knowledge.
- B
White box test
Why wrong: White box tests provide full knowledge of the environment.
- C
Red team exercise
Why wrong: Red team exercises are broader and may involve multiple attack vectors, but the term 'black box' specifically refers to the level of knowledge.
- D
Black box test
Black box tests simulate an external attacker with no prior knowledge.
Question 250 of 1,000
CISSP Security Assessment and Testing Practice Question
This CISSP practice question tests your understanding of security assessment and testing. 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.
An organization wants to test its security controls by simulating an attack where the tester has no prior knowledge of the internal network. This is known as a:
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
✓
Black box test
A black box test (D) is correct because the tester has no prior knowledge of the internal network, simulating an external attacker with zero inside information. This approach evaluates the security controls from an unprivileged, external perspective, relying solely on publicly available information and active reconnaissance. It is the purest form of adversarial simulation for testing perimeter defenses and detection capabilities.
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.
- ✗
Grey box test
Why it's wrong here
Grey box tests provide partial knowledge.
- ✗
White box test
Why it's wrong here
White box tests provide full knowledge of the environment.
- ✗
Red team exercise
Why it's wrong here
Red team exercises are broader and may involve multiple attack vectors, but the term 'black box' specifically refers to the level of knowledge.
- ✓
Black box test
Why this is correct
Black box tests simulate an external attacker with no prior knowledge.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing the testing methodology (black/grey/white box) with the team structure (red team exercise), leading candidates to select 'Red team exercise' because it sounds like an attack simulation, but the question explicitly defines the knowledge level, not the team composition.
Detailed technical explanation
How to think about this question
In a black box test, the tester typically starts with only the target domain name or IP range and uses tools like Nmap for port scanning, Wireshark for passive traffic analysis, and Burp Suite for web application fuzzing. The lack of internal knowledge forces reliance on OSINT (e.g., Shodan, DNS enumeration) and vulnerability scanning to discover entry points. This approach tests the effectiveness of security controls like firewalls, IDS/IPS, and access control lists (ACLs) against an unauthenticated external threat actor.
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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FAQ
Questions learners often ask
What does this CISSP question test?
Security Assessment and Testing — This question tests Security Assessment and Testing — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Black box test — A black box test (D) is correct because the tester has no prior knowledge of the internal network, simulating an external attacker with zero inside information. This approach evaluates the security controls from an unprivileged, external perspective, relying solely on publicly available information and active reconnaissance. It is the purest form of adversarial simulation for testing perimeter defenses and detection capabilities.
What should I do if I get this CISSP 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.
About these practice questions
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Last reviewed: Jul 4, 2026
This CISSP practice question is part of Courseiva's free ISC2 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 CISSP exam.
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