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Exam CSSLP topic 3 question 40 discussion

Actual exam question from ISC's CSSLP
Question #: 40
Topic #: 3
[All CSSLP Questions]

How can you calculate the Annualized Loss Expectancy (ALE) that may occur due to a threat?

  • A. Single Loss Expectancy (SLE) X Annualized Rate of Occurrence (ARO)
  • B. Single Loss Expectancy (SLE)/ Exposure Factor (EF)
  • C. Asset Value X Exposure Factor (EF)
  • D. Exposure Factor (EF)/Single Loss Expectancy (SLE)
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Suggested Answer: A 🗳️
The Annualized Loss Expectancy (ALE) that occurs due to a threat can be calculated by multiplying the Single Loss Expectancy (SLE) with the
Annualized Rate of Occurrence (ARO). Annualized Loss Expectancy (ALE) = Single Loss Expectancy (SLE) X Annualized Rate of Occurrence (ARO) Annualized
Rate of Occurrence (ARO) is a number that represents the estimated frequency in which a threat is expected to occur. It is calculated based upon the probability of the event occurring and the number of employees that could make that event occur. Single Loss Expectancy (SLE) is the value in dollars that is assigned to a single event. SLE can be calculated by the following formula: SLE = Asset Value ($) X Exposure Factor (EF) The Exposure Factor (EF) represents the % of assets loss caused by a threat. The EF is required to calculate Single Loss Expectancy (SLE).

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