Quick Answer
The answer is a vulnerability scan. This is the correct choice because a vulnerability scan is a non-intrusive, automated assessment that identifies known vulnerabilities—such as missing patches or misconfigurations—by comparing system states against databases of CVEs and configuration benchmarks like CIS benchmarks, without exploiting weaknesses or generating attack traffic, making it safe for a production environment. On the CISSP exam, this distinction tests your understanding of assessment types under Domain 6 (Security Assessment and Testing), where the common trap is confusing a vulnerability scan with a penetration test; remember that a pen test involves active exploitation that risks disruption, while a scan is purely passive and diagnostic. A useful memory tip is “Scan to see, test to break”—if the goal is to avoid disruption, always choose the scan.
This CISSP practice question tests your understanding of security assessment and testing. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 security professional is tasked with testing the effectiveness of security controls in a production environment without causing disruption. Which type of assessment should be performed?
Penetration test
Why wrong: Penetration tests involve active exploitation that can disrupt operations.
Red team exercise
Why wrong: Red team exercises are adversarial and can cause disruption.
Vulnerability scan
Vulnerability scans are passive and safe for production environments.
Social engineering test
Why wrong: Social engineering tests target human factors, not technical controls.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Vulnerability scan
A vulnerability scan is the correct choice because it is a non-intrusive, automated assessment that identifies known vulnerabilities (e.g., missing patches, misconfigurations) by comparing system states against a database of CVEs and configuration benchmarks (e.g., CIS benchmarks). It does not exploit vulnerabilities or generate attack traffic, making it safe for production environments. In contrast, penetration tests and red team exercises involve active exploitation and simulated attacks that risk service disruption.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Penetration test
Why it's wrong here
Penetration tests involve active exploitation that can disrupt operations.
Red team exercise
Why it's wrong here
Red team exercises are adversarial and can cause disruption.
Vulnerability scan
Why this is correct
Vulnerability scans are passive and safe for production environments.
Related concept
Read the scenario before looking for a memorised answer.
Social engineering test
Why it's wrong here
Social engineering tests target human factors, not technical controls.
Common exam traps
The trap here is that candidates often confuse a vulnerability scan with a penetration test, assuming both involve active exploitation, but the key distinction is that a vulnerability scan is passive and non-destructive, while a penetration test is active and potentially disruptive.
Detailed technical explanation
Vulnerability scanners like Nessus or Qualys use plugins that send crafted packets (e.g., TCP SYN scans, HTTP requests) to probe services and compare responses against a vulnerability database (e.g., NVD). They rely on banner grabbing and version fingerprinting to identify outdated software, but they do not execute exploit code. A real-world scenario: a vulnerability scan might detect an unpatched Apache Struts CVE-2017-5638, but a penetration test would attempt to trigger the remote code execution, potentially crashing the web server.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
An employee at a financial services firm receives an email that appears to come from the IT helpdesk, asking them to reset their password via a link. The link leads to a convincing fake portal that harvests credentials. Security teams use phishing simulations and security-awareness training to reduce this attack vector. Questions like this test whether you can identify social engineering techniques and appropriate controls.
What to study next
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
Security Assessment and Testing — This question tests Security Assessment and Testing — Read the scenario before looking for a memorised answer..
The correct answer is: Vulnerability scan — A vulnerability scan is the correct choice because it is a non-intrusive, automated assessment that identifies known vulnerabilities (e.g., missing patches, misconfigurations) by comparing system states against a database of CVEs and configuration benchmarks (e.g., CIS benchmarks). It does not exploit vulnerabilities or generate attack traffic, making it safe for production environments. In contrast, penetration tests and red team exercises involve active exploitation and simulated attacks that risk service disruption.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 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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