CompTIA Cloud+ Practice Test

Which of the following refers to the time it takes to restore a service after a failure?

1. RPO

2. MTTR

3. MTBF

4. RTO

The correct answer is: MTTR

The concept being referenced here pertains to the duration required to bring a service back to operational status following an unexpected failure, which is known as Mean Time to Repair (MTTR). This metric is crucial for evaluating the efficiency and effectiveness of an organization's incident response and recovery strategies. MTTR specifically focuses on the actual time taken to fix a problem and restore functionality, encompassing the time from when a service outage is detected until it is fully operational again. Organizations leverage this measurement to improve their recovery processes, minimize downtime, and enhance overall service availability. In contrast, other terms in the options represent different metrics. Recovery Point Objective (RPO) relates to the acceptable amount of data loss measured in time that an organization can tolerate following an incident. Mean Time Between Failures (MTBF) is concerned with the average time between service interruptions, indicating reliability rather than recovery. Recovery Time Objective (RTO), though closely related, is the target time set for recovering a service after a disruption, not necessarily the actual time taken to repair it. By clearly identifying MTTR as the correct answer, it highlights the focus on the restoration process itself, which is pivotal for maintaining uninterrupted service and meeting organizational resilience goals.