CISM Incident Management Practice Question
Which of the following is the primary purpose of conducting a root cause analysis (RCA) after a security incident?
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 determine process and governance failures that allowed the incident to occur
RCA aims to identify underlying causes to prevent recurrence. While it may involve understanding the technical cause, the ultimate goal is to improve processes and controls.
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 the technical vulnerability that was exploited
Why it's wrong here
Identifying the exploited vulnerability is one finding, yet RCA examines all contributing causes — process gaps, detection failures, human factors — not just the technical flaw. Vulnerability identification suits patch management and scanning activities; RCA aims to prevent recurrence of the whole incident, not merely the single exploited weakness.
- ✓
To determine process and governance failures that allowed the incident to occur
Why this is correct
RCA examines the underlying process and governance failures that permitted the incident, not merely the technical trigger. This satisfies the stem's demand for the primary purpose: preventing recurrence by correcting systemic weaknesses in controls, oversight and decision-making, rather than attributing blame or documenting the event itself.
- ✗
To satisfy regulatory reporting requirements
Why it's wrong here
Regulatory reporting may follow an incident, but RCA's purpose is understanding how and why the incident occurred so controls can be improved. Reporting obligations are satisfied by notification and documentation processes, not by the causal investigation itself, so this describes an outcome rather than the primary purpose.
- ✗
To assign blame to responsible individuals
Why it's wrong here
RCA is a blameless investigative process; its purpose is establishing causal factors and preventing recurrence, not attributing fault to people. Blame assignment belongs to HR or disciplinary procedures, and pursuing it undermines the honest reporting RCA depends on, so it cannot be the primary purpose.
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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.