- A
Updating the IR plan and playbooks based on lessons learned
Directly incorporating lessons learned into the plan is essential.
- B
Sharing indicators of compromise with an ISAC
Why wrong: This is important for threat intelligence but does not update the plan.
- C
Revising the IR policy
Why wrong: Policy changes may be needed, but the plan and playbooks are more granular.
- D
Conducting a tabletop exercise
Why wrong: Exercises test the plan but do not directly update it.
Question 403 of 905
CISM Incident Management Practice Question
This CISM practice question tests your understanding of incident 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.
An organization is updating its incident response plan after a major incident. Which post-incident activity should be performed to ensure the plan reflects lessons learned?
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
✓
Updating the IR plan and playbooks based on lessons learned
Updating the IR plan and playbooks based on lessons learned is the definitive post-incident activity that directly incorporates findings from the after-action review into the operational documentation. This ensures the plan reflects actual gaps or improvements identified during the incident, making it actionable for future events. Without this update, the plan remains static and fails to evolve with the organization's threat landscape.
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.
- ✓
Updating the IR plan and playbooks based on lessons learned
Why this is correct
Directly incorporating lessons learned into the plan is essential.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Sharing indicators of compromise with an ISAC
Why it's wrong here
This is important for threat intelligence but does not update the plan.
- ✗
Revising the IR policy
Why it's wrong here
Policy changes may be needed, but the plan and playbooks are more granular.
- ✗
Conducting a tabletop exercise
Why it's wrong here
Exercises test the plan but do not directly update it.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse 'revising the IR policy' (a high-level governance document) with 'updating the IR plan and playbooks' (the operational, detailed documentation that directly incorporates lessons learned), leading them to choose the broader, less actionable option.
Detailed technical explanation
How to think about this question
The post-incident activity of updating playbooks involves modifying specific step-by-step procedures, such as adjusting containment sequences (e.g., changing the order of ACL application on firewalls or updating SIEM correlation rules) based on observed delays or missteps. For example, if the incident revealed that the existing playbook for ransomware did not include a step to isolate the infected host from the backup network segment, the update would add that specific network segmentation command (e.g., 'apply VLAN access-map to block port 445 to backup subnet'). This granularity ensures the plan is not just a policy document but a living technical guide.
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 practitioner preparing for the CISM exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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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Incident Management — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this CISM question test?
Incident Management — This question tests Incident Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Updating the IR plan and playbooks based on lessons learned — Updating the IR plan and playbooks based on lessons learned is the definitive post-incident activity that directly incorporates findings from the after-action review into the operational documentation. This ensures the plan reflects actual gaps or improvements identified during the incident, making it actionable for future events. Without this update, the plan remains static and fails to evolve with the organization's threat landscape.
What should I do if I get this CISM 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.
About these practice questions
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Last reviewed: Jul 4, 2026
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.
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