CRISC IT Risk Assessment Practice Question
In the FAIR framework, Loss Event Frequency (LEF) is calculated as:
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
FAIR defines LEF = Threat Event Frequency × Vulnerability (probability that a threat event results in a loss event).
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 + Vulnerability
Why it's wrong here
Addition is not used.
- ✗
Annualized Rate of Occurrence × Single Loss Expectancy
Why it's wrong here
This is ALE, not LEF.
- ✗
Loss Magnitude × Vulnerability
Why it's wrong here
Loss Magnitude is separate from frequency.
- ✓
Threat Event Frequency × Vulnerability
Why this is correct
This is the correct formula.
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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.