Question 420
A $200000 system would incur a 30 percent loss from one facility event. What is the single loss expectancy (SLE) for one event?
Explanation
Correct Answer
Single loss expectancy measures the loss from one event: asset value multiplied by the exposure factor. Here, $200,000 × 0.30 equals $60,000. Event frequency is not needed unless calculating annualized loss expectancy.
Incorrect Answers
A $6,000 loss would use an exposure factor of 0.03, but the scenario states 30% damage. With an asset value of $200,000, this choice understates the financial impact of one incident by a factor of ten.
The $140,000 amount is the value remaining after a 30% loss, not the damage sustained. Single loss expectancy counts the $60,000 lost portion, rather than the 70% of the asset that survives.
A $200,000 single-event loss assumes destruction of the entire asset, corresponding to a 100% exposure factor. The stated event affects 30% of its value, so treating the incident as a total loss contradicts the scenario.