Which of the following is a best practice used in relation to MTBF?

Determining a backup schedule based on uptime requirements is primarily related to recovery point objective (RPO) and data loss tolerance, not directly MTBF.

MTBF provides a statistical prediction of how long a component or system is expected to operate before experiencing a failure. By using this metric, administrators can implement proactive maintenance strategies to replace components nearing their predicted end-of-life, thereby preventing unexpected failures and minimizing downtime.

Determining downtime for system recovery is related to recovery time objective (RTO) and disaster recovery planning, not directly MTBF.

Reactively replacing components after failure is a reactive maintenance approach that fails to leverage the predictive nature of MTBF to prevent outages.