CompTIA Security+ (SY0-601) — Question 320

Which of the following measures the average time that equipment will operate before it breaks?

Answer options

• A. SLE
• B. MTBF
• C. RTO
• D. ARO

Correct answer: B

Explanation

MTBF, or Mean Time Between Failures, accurately describes the average operational time before equipment fails, making it the correct choice. SLE (Single Loss Expectancy), RTO (Recovery Time Objective), and ARO (Annualized Rate of Occurrence) do not pertain to the measurement of time before equipment breakdown.