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Cloud Architecture and DesignmediumMultiple ChoiceObjective-mapped

CV0-004 Cloud Architecture and Design Practice Question

A company is designing a disaster recovery plan for its critical application. The application must be recovered within 4 hours (RTO) and can tolerate up to 1 hour of data loss (RPO). Which replication strategy is most cost-effective?

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

Asynchronous replication

Asynchronous replication meets the RPO of 1 hour (data loss up to 1 hour) and can be lower cost than synchronous replication, which requires high bandwidth. Synchronous replication would be more expensive and unnecessary. No replication would not meet RPO. Daily backups would exceed RPO.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • No replication; rely on backups restored from archive

    Why it's wrong here

    Backups may take longer to restore and may have higher data loss.

  • Asynchronous replication

    Why this is correct

    Asynchronous replication can achieve RPO of 1 hour at lower cost.

  • Synchronous replication

    Why it's wrong here

    Synchronous replication ensures zero data loss but is more expensive due to low-latency requirements.

  • Daily snapshots with no replication

    Why it's wrong here

    Daily snapshots could lose up to 24 hours of data, exceeding the 1-hour RPO.

Visual reference

R1 R2 R3 R4 10 100 10 100 OSPF picks R1→R2→R4 (cost 20) over R1→R3→R4 (cost 200)

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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