Certified in Risk and Information Systems Control (CRISC) — Question 1252

Which of the following is the BEST key performance indicator (KPI) to measure the ability to deliver uninterrupted IT services?

Answer options

• A. Mean time to recover (MTTR)
• B. Mean time between failures (MTBF)
• C. Planned downtime
• D. Unplanned downtime

Correct answer: B

Explanation

The correct answer is B, Mean time between failures (MTBF), as it measures the average time between service interruptions, indicating how well IT services are maintained. Options A, C, and D focus on recovery times and specific downtimes, which do not directly reflect the overall reliability and continuity of service delivery.