Quick Answer
The answer is Single Loss Expectancy (SLE). This metric directly measures the potential financial loss from a single occurrence of a risk, calculated by multiplying the Asset Value (AV) by the Exposure Factor (EF), which represents the percentage of asset value lost in one incident. For the SSCP exam, this concept tests your understanding of quantitative risk analysis within the Risk Identification, Monitoring, and Analysis domain. A common trap is confusing SLE with Annualized Loss Expectancy (ALE), which adds the Annualized Rate of Occurrence (ARO) into the calculation—remember that SLE is strictly per event, not per year. A helpful memory tip is to think of SLE as the “one-shot cost”: if a server worth $10,000 has an EF of 0.5, the SLE is $5,000 for that single breach.
This SSCP practice question tests your understanding of risk identification, monitoring and analysis. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which metric is used to measure the potential loss from a single occurrence of a risk?
Exposure Factor (EF)
Why wrong: EF is percentage of asset lost.
Annualized Loss Expectancy (ALE)
Why wrong: ALE is annual expected loss.
Annualized Rate of Occurrence (ARO)
Why wrong: ARO measures frequency, not loss from a single event.
Single Loss Expectancy (SLE)
SLE is the monetary loss from a single occurrence.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Single Loss Expectancy (SLE)
The Single Loss Expectancy (SLE) is the metric used to measure the potential loss from a single occurrence of a risk. It is calculated as Asset Value (AV) multiplied by the Exposure Factor (EF), providing a dollar value for one incident. This directly answers the question of loss per single event.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Exposure Factor (EF)
Why it's wrong here
EF is percentage of asset lost.
Annualized Loss Expectancy (ALE)
Why it's wrong here
ALE is annual expected loss.
Annualized Rate of Occurrence (ARO)
Why it's wrong here
ARO measures frequency, not loss from a single event.
Single Loss Expectancy (SLE)
Why this is correct
SLE is the monetary loss from a single occurrence.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
ISC2 often tests the distinction between SLE and ALE, trapping candidates who confuse a single-event loss with an annualized figure, especially when the question explicitly asks for 'single occurrence' but the answer options include ALE as a distractor.
Detailed technical explanation
SLE is a foundational component in quantitative risk analysis, computed as AV × EF. For example, if a server is valued at $100,000 and a ransomware attack destroys 40% of its data (EF = 0.4), the SLE is $40,000. This value feeds directly into ALE (SLE × ARO) to prioritize risk mitigation budgets.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A SOC analyst notices unusual lateral movement in the network at 2 AM. The IR playbook dictates: identify and contain (isolate the affected machine), then eradicate (remove the malware), then recover (restore from backup), then document. Skipping containment before eradication risks the attacker regaining access. Questions like this test the sequence and rationale of incident response phases.
What to study next
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FAQ
Risk Identification, Monitoring and Analysis — This question tests Risk Identification, Monitoring and Analysis — Read the scenario before looking for a memorised answer..
The correct answer is: Single Loss Expectancy (SLE) — The Single Loss Expectancy (SLE) is the metric used to measure the potential loss from a single occurrence of a risk. It is calculated as Asset Value (AV) multiplied by the Exposure Factor (EF), providing a dollar value for one incident. This directly answers the question of loss per single event.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This SSCP practice question is part of Courseiva's free ISC2 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 SSCP exam.
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