CV0-004 Cloud Architecture and Design Practice Question
A cloud architect is designing a multi-region application with a Recovery Time Objective (RTO) of 1 hour and a Recovery Point Objective (RPO) of 15 minutes. The application runs on virtual machines in a public cloud. Which disaster recovery strategy best meets these objectives?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Hot standby in a secondary region with synchronous replication
Hot standby involves running a fully functional standby environment that can take over within minutes, achieving low RTO and RPO. Active-active can also meet these but may be more complex and costly; warm standby typically has longer RTO; cold standby has hours.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Hot standby in a secondary region with synchronous replication
Why this is correct
Hot standby with synchronous replication provides RTO of minutes and RPO near zero, meeting the requirements.
- ✗
Active-active across two regions with load balancing
Why it's wrong here
Active-active load balancing replicates application traffic across regions but does not guarantee synchronous data replication with a 15-minute RPO; asynchronous replication between regions typically introduces latency exceeding this threshold. This strategy is tempting because it provides high availability and automatic failover for stateless workloads, and would be correct if the RPO were zero or the application tolerated eventual consistency.
- ✗
Cold standby with daily backups
Why it's wrong here
Cold standby has RTO of hours to days, and daily backups exceed RPO.
- ✗
Warm standby with hourly snapshots
Why it's wrong here
Hourly snapshots exceed the 15-minute RPO, and warm standby typically has longer RTO.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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