Level 3 - Disaster recovery Quiz

What is the primary metric used to measure the reliability of a system's availability, and what does it represent?

• Recovery Time Objective (RTO), time to identify a problem and perform recovery

• Mean Time Between Failures (MTBF), expected lifetime of a product

• Maximum Tolerable Downtime (MTD), total operational time divided by the number of failures

• Mean Time to Repair (MTTR), time taken to correct a fault

How is fault tolerance achieved in a system, and what is a redundant or failover component?

• By minimizing Mean Time to Failure (MTTF) for critical components

• By provisioning redundancy to eliminate single points of failure

• By increasing Maximum Tolerable Downtime (MTD)

• By reducing the Mean Time to Repair (MTTR)

What is the purpose of a hot site in disaster recovery planning?

• To take longer to set up in case of disaster

• To failover almost immediately with operational computer equipment

• To provide mutual support in reciprocal arrangements

• To be an empty building with a lease agreement

Which key performance indicator (KPI) measures the time taken to correct a fault so that the system is restored to full operation?

• Mean Time Between Failures (MTBF)

• Mean Time to Failure (MTTF)

• Mean Time to Repair (MTTR)

• Mean Time to Recovery (MTTR)

In the context of high availability, what does continuous availability refer to?

• A system that can failover to another asset

• A system with no scheduled downtime and rare outages

• The amount of data loss a system can sustain

• The period following a disaster that an individual IT system may remain offline