CRISC IT Risk Assessment Practice Question
In the FAIR model, 'Loss Event Frequency' is calculated as:
⚠ Common exam trap
Watch out — candidates often confuse the FAIR model's Loss Event Frequency with the traditional quantitative risk formula ARO × SLE, leading them to select option D, but FAIR separates frequency from magnitude and uses Vulnerability as a probability factor rather than a direct loss value.
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
✓
Threat Event Frequency × Vulnerability
In the FAIR model, Loss Event Frequency (LEF) is the product of Threat Event Frequency (TEF) and Vulnerability (Vuln). This represents how often a threat agent successfully exploits a weakness, making option B correct. The formula is LEF = TEF × Vuln, where Vulnerability is the probability that a threat event will result in a loss.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Threat Event Frequency × Asset Value
Why it's wrong here
Incorrect; asset value is part of loss magnitude.
- ✓
Threat Event Frequency × Vulnerability
Why this is correct
Correct; LEF = TEF × V.
- ✗
Threat Event Frequency × Loss Magnitude
Why it's wrong here
Incorrect; that would be ALE-like but not LEF.
- ✗
Annualized Rate of Occurrence × Single Loss Expectancy
Why it's wrong here
Incorrect; that's ALE.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CRISC 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 CRISC exam.