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CISM Practice Question: An organization's incident response team is…
An organization's incident response team is conducting a lessons learned meeting after a major incident. Which outcome is MOST critical to document?
⚠ Common exam trap
Test-takers frequently confuse the 'lessons learned' meeting with a post-incident debrief focused on operational details, leading them to select the timeline or cost as the most critical outcome, when CISM specifically emphasizes the root cause as the key driver for process improvement and risk reduction.
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
✓
Root cause analysis
The root cause analysis is the most critical outcome to document because it identifies the underlying technical failure that allowed the incident to occur, enabling the organization to implement permanent corrective actions. Without a documented root cause, the incident response process cannot transition from containment to prevention, and the organization risks repeating the same failure. In CISM's Incident Management domain, the lessons learned phase specifically aims to improve future response capability by addressing systemic weaknesses, which requires a clear understanding of why the incident happened.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Root cause analysis
Why this is correct
Root cause identifies underlying issues to prevent recurrence.
- ✗
Detailed timeline of events
Why it's wrong here
Timeline is important but root cause is more critical for improvement.
- ✗
List of tools used
Why it's wrong here
Tool list is less critical than understanding why the incident happened.
- ✗
Total cost of the incident
Why it's wrong here
Cost is a metric, not the main learning point.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CISM practice question is part of Courseiva's free ISACA 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 CISM exam.