Question 420
A branch office stores equipment worth $180,000, and a modeled flood would destroy 30 percent of its value in one incident. What is its single loss expectancy?
Explanation
Correct Answer
SLE equals asset value multiplied by exposure factor: 180,000 times 0.30 equals 54,000. Risk work separates frequency and loss estimates, risk tolerance, authorized treatment and documented residual exposure. The case turns on and a modeled flood would destroy 30 percent of its value in one incident; “A single loss expectancy of $54,000” addresses that precise condition. “A single loss expectancy of $210,000” is not equivalent because adding a percentage to the entire asset value is not how exposure factor measures loss.
Incorrect Answers
Adding a percentage to the entire asset value is not how exposure factor measures loss. Risk work separates frequency and loss estimates, risk tolerance, authorized treatment and documented residual exposure. In the reported situation, and a modeled flood would destroy 30 percent of its value in one incident. The effective mechanism is “A single loss expectancy of $54,000”: sLE equals asset value multiplied by exposure factor: 180,000 times 0.30 equals 54,000.
This assumes total asset destruction even though the modeled exposure is only thirty percent. The evidence is and a modeled flood would destroy 30 percent of its value in one incident. Risk work separates frequency and loss estimates, risk tolerance, authorized treatment and documented residual exposure. By contrast, “A single loss expectancy of $54,000” operates on the specific concern: sLE equals asset value multiplied by exposure factor: 180,000 times 0.30 equals 54,000.
Dividing by an arbitrary annual frequency is not part of the one-event SLE calculation. Risk work separates frequency and loss estimates, risk tolerance, authorized treatment and documented residual exposure. Here the decisive fact is and a modeled flood would destroy 30 percent of its value in one incident. “A single loss expectancy of $54,000” matches that requirement because sLE equals asset value multiplied by exposure factor: 180,000 times 0.30 equals 54,000.






CompTIA Security+ (SY0-701) Practice Tests