Which of the following metrics are used to calculate the SLE? (Select TWO)
A. ROI
B. ARO
C. ALE
D. MTBF
E. MTTF
F. TCO
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Which of the following metrics are used to calculate the SLE?
Single Loss Expectancy (SLE) – the amount that would be lost in a single occurrence of the risk factor. This is determined by multiplying the value of the asset by an Exposure Factor (EF). EF is the percentage of the asset’s value that would be lost.
Unfortunately, there is no such values among answers. So another way to get SLE is to divide ALE by ARO, though it looks weird and impractical.
Annual Loss Expectancy (ALE) – the amount that would be lost over the course of a year. This is determined by multiplying the SLE by the Annual Rate of Occurrence (ARO).
So the answers B and C look correct.