CS0-003 Incident Response and Management Practice Question
This CS0-003 practice question tests your understanding of incident response and management. 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.
Which THREE activities are typically performed during the post-incident activity phase of the incident response lifecycle?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Root cause analysis.
Root cause analysis (B) is performed during the post-incident activity phase to identify the underlying vulnerability or misconfiguration that allowed the incident to occur. This analysis informs remediation steps and helps prevent recurrence, making it a core activity of this phase.
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.
✗
System restoration from backups.
Why it's wrong here
System restoration is part of the recovery phase, not post-incident.
✓
Root cause analysis.
Why this is correct
Identifying the root cause is a key post-incident activity.
Related concept
Read the scenario before looking for a memorised answer.
✗
Implementation of new security awareness training.
Why it's wrong here
Training implementation is a follow-up action, not a standard post-incident activity.
✓
Evidence retention for potential legal action.
Why this is correct
Evidence must be preserved for legal or compliance purposes.
Related concept
Read the scenario before looking for a memorised answer.
✓
Lessons learned meeting.
Why this is correct
Conducting a lessons learned meeting is essential for improvement.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the distinction between recovery-phase actions (e.g., system restoration) and post-incident analysis activities, leading candidates to mistakenly include restoration as a post-incident task.
Detailed technical explanation
How to think about this question
The post-incident activity phase, as defined by NIST SP 800-61 Rev. 2, includes activities such as lessons learned meetings, evidence retention for legal or regulatory purposes, and root cause analysis. Evidence retention (D) ensures chain of custody and compliance with e-discovery rules, while lessons learned meetings (E) capture what worked and what did not, feeding into process improvements. These activities are distinct from operational recovery steps like restoration from backups.
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.
Incident Response and Management — This question tests Incident Response and Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Root cause analysis. — Root cause analysis (B) is performed during the post-incident activity phase to identify the underlying vulnerability or misconfiguration that allowed the incident to occur. This analysis informs remediation steps and helps prevent recurrence, making it a core activity of this phase.
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.
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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