- A
To identify vulnerabilities in the network
Why wrong: Vulnerability assessments identify vulnerabilities; audits focus on compliance.
- B
To compare security controls against a defined standard
Audits measure compliance with standards or regulations.
- C
To perform an informal evaluation of security posture
Why wrong: Informal evaluations are security reviews, not audits.
- D
To exploit vulnerabilities and demonstrate impact
Why wrong: This is the goal of penetration testing, not a security audit.
Question 590 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.
Which of the following is the primary purpose of a security audit?
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 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
✓
To compare security controls against a defined standard
A security audit's primary purpose is to systematically evaluate an organization's security controls against a predefined standard, such as ISO 27001, NIST SP 800-53, or PCI DSS. This comparison verifies compliance and identifies gaps, not merely vulnerabilities. Unlike a vulnerability assessment or penetration test, an audit focuses on adherence to criteria, not exploitation or informal review.
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.
- ✗
To identify vulnerabilities in the network
Why it's wrong here
Vulnerability assessments identify vulnerabilities; audits focus on compliance.
- ✓
To compare security controls against a defined standard
Why this is correct
Audits measure compliance with standards or regulations.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
To perform an informal evaluation of security posture
Why it's wrong here
Informal evaluations are security reviews, not audits.
- ✗
To exploit vulnerabilities and demonstrate impact
Why it's wrong here
This is the goal of penetration testing, not a security audit.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing a security audit with a vulnerability assessment or penetration test, leading candidates to pick 'identify vulnerabilities' or 'exploit vulnerabilities' instead of recognizing the audit's formal, standards-based comparison purpose.
Detailed technical explanation
How to think about this question
A security audit typically involves reviewing evidence like configuration files, logs, and policy documents against control objectives (e.g., from ISO 27001 Annex A). For example, an auditor might check if firewall rules match the approved baseline (e.g., RFC 1918 for private IP filtering) or if access reviews occur quarterly per the standard. The audit report provides a compliance score, not a list of exploitable flaws, which is why it's used for regulatory attestation.
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.
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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Security Assessment and Testing — study guide chapter
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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: To compare security controls against a defined standard — A security audit's primary purpose is to systematically evaluate an organization's security controls against a predefined standard, such as ISO 27001, NIST SP 800-53, or PCI DSS. This comparison verifies compliance and identifies gaps, not merely vulnerabilities. Unlike a vulnerability assessment or penetration test, an audit focuses on adherence to criteria, not exploitation or informal review.
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.
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.
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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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