Which metric expresses the percentage of an asset's value lost in a single risk event?
A CISSP practice question covering Domain 1: Security and Risk Management. Try answering before reading the explanation below.
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Why "EF — Exposure Factor" is the right answer
Exposure Factor (EF) is the percent loss per event. SLE = AV × EF. ALE = SLE × ARO. ARO is the events-per-year rate.
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