You are asked to design a robust disaster recovery (DR) strategy for a mission-critical application hosted on GCP. The requirement is to achieve an RTO (Recovery Time Objective) of less than 15 minutes. Which of the following strategies would be most appropriate?
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Correct answer: Hot Standby.
Why this is the answer
*Explanation:* To meet the requirement of an RTO of less than 15 minutes for a mission-critical application, the most appropriate DR strategy is **Hot Standby (option D)**. Hot Standby involves maintaining a fully operational and up-to-date replica of the application environment, which can be immediately activated in case of a disaster, minimizing downtime. Options A, B, and C may have longer recovery times, and option E is not a DR strategy.
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