Understanding Cisco Cybersecurity Fundamentals (SECFND, legacy) — Question 87

Which of the following are metrics that can measure the effectiveness of a runbook?

Answer options

• A. Mean time to repair (MTTR)
• B. Mean time between failures (MTBF)
• C. Mean time to discover a security incident
• D. All of the above

Correct answer: D

Explanation

The correct answer is D, as all listed metrics—MTTR, MTBF, and the mean time to discover a security incident—are relevant indicators of a runbook's effectiveness. MTTR measures the time taken to fix issues, MTBF assesses reliability, and the mean time to discover incidents gauges detection efficiency; all contribute to evaluating runbook performance.