CS0-003 Vulnerability Management Practice Question
This CS0-003 practice question tests your understanding of vulnerability management. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 company has a policy to remediate vulnerabilities within 30 days. A critical vulnerability is discovered on a database server. The patch requires a reboot, and the database cannot be taken offline during business hours. Which of the following is the BEST approach?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Implement a compensating control
Option A is correct because when a critical vulnerability requires a patch that mandates a reboot, but the database cannot be taken offline during business hours, implementing a compensating control (such as network segmentation, strict firewall rules, or an intrusion prevention system (IPS) signature) reduces the risk to an acceptable level until the patch can be applied. This aligns with the 30-day remediation policy by addressing the vulnerability without violating operational constraints.
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.
✓
Implement a compensating control
Why this is correct
Compensating controls reduce risk immediately while planning for patching.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Apply a hotfix without reboot
Why it's wrong here
Hotfixes without reboot may not fully address the vulnerability or cause instability.
✗
Schedule the patch during the next maintenance window
Why it's wrong here
This delays remediation and may exceed the 30-day policy if the window is far.
✗
Extend the remediation deadline
Why it's wrong here
This violates policy without a technical solution.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the misconception that 'schedule the patch during the next maintenance window' is always acceptable, but the trap here is that the 30-day remediation deadline is a hard policy requirement, and scheduling alone does not guarantee compliance if the window is beyond 30 days.
Detailed technical explanation
How to think about this question
Compensating controls are often documented in the NIST SP 800-53 framework (e.g., control SC-7 for boundary protection) and must be formally approved by the risk owner. In practice, a compensating control for a database server might involve placing it behind a web application firewall (WAF) with strict allow-listing, disabling unnecessary services, or applying a virtual patch via an intrusion prevention system (IPS) like Snort or Suricata with a custom rule to block exploit traffic. The key is that the control must be verifiable and effective against the specific vulnerability's attack vector, such as a SQL injection or buffer overflow.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CS0-003 question in full detail.
Vulnerability Management — This question tests Vulnerability Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Implement a compensating control — Option A is correct because when a critical vulnerability requires a patch that mandates a reboot, but the database cannot be taken offline during business hours, implementing a compensating control (such as network segmentation, strict firewall rules, or an intrusion prevention system (IPS) signature) reduces the risk to an acceptable level until the patch can be applied. This aligns with the 30-day remediation policy by addressing the vulnerability without violating operational constraints.
What should I do if I get this CS0-003 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: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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