Certified Ethical Hacker (CEH v10) — Question 155

The change of a hard drive failure is once every three years. The cost to buy a new hard drive is $300. It will require 10 hours to restore the OS and software to the new hard disk. It will require a further 4 hours to restore the database from the last backup to the new hard disk. The recovery person earns $10/hour.
Calculate the SLE, ARO, and ALE. Assume the EF = 1(100%). What is the closest approximate cost of this replacement and recovery operation per year?

Answer options

• A. $1320
• B. $440
• C. $100
• D. $146

Correct answer: D

Explanation

The correct answer is D. To calculate the total cost per year, we first determine the total recovery cost: $300 for the hard drive plus 14 hours of labor at $10/hour, totaling $440. Since the drive fails once every three years, the ARO is 0.33 (1/3). Thus, the ALE is $440 * 0.33, which is approximately $146. The other options do not accurately reflect the annualized cost of recovery.