CompTIA Network+ Practice Test

Which of the following is true regarding MTTR?

1. It measures the average time for data backups

2. It indicates repair efficiency on devices

3. It determines the time taken for network setup

4. It is unrelated to network operations

The correct answer is: It indicates repair efficiency on devices

MTTR, or Mean Time to Repair, is a key performance indicator that measures the average time it takes to repair a failed device or system component after it has gone down. The focus is primarily on the efficiency of the repair processes and how quickly operations can be restored. This concept is vital in network management because lower MTTR values usually indicate that an organization can react swiftly to failures, minimizing downtime and maintaining service availability. Thus, the statement about MTTR indicating repair efficiency on devices captures its essence perfectly. The other choices reference different aspects of network operations and management that do not align with the definition of MTTR. For instance, measuring the average time for data backups relates more to backup procedures rather than repair times. Similarly, determining the time taken for network setup focuses on configuration and deployment processes rather than on how quickly repairs can be made. Finally, the idea that MTTR is unrelated to network operations contradicts its importance in maintaining operational efficiency and reliability in network services.