CompTIA Network+ (N10-008) — Question 652

Which of the following is used to estimate the average life span of a device?

Answer options

• A. RTO
• B. RPO
• C. MTBF
• D. MTTR

Correct answer: C

Explanation

The correct answer is MTBF (Mean Time Between Failures), which measures the average time between failures of a device. RTO (Recovery Time Objective) and RPO (Recovery Point Objective) are metrics related to disaster recovery, while MTTR (Mean Time to Repair) focuses on the average time taken to repair a device after a failure.