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CV0-004 Practice Question: A cloud architect is designing a disaster…

A cloud architect is designing a disaster recovery plan. Which TWO strategies ensure minimal data loss?

⚠ Common exam trap

Many exam-takers confuse asynchronous replication (which has a non-zero RPO) with synchronous replication (which has zero RPO), or they mistakenly believe that daily backups in the same data center are sufficient for disaster recovery, ignoring the need for geographic separation and low RPO.

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

Synchronous replication across regions

Synchronous replication across regions (B) ensures that every write is committed to both the primary and secondary sites before acknowledging the client, resulting in zero data loss (RPO=0) in the event of a failover. Application-level multi-region writes (D) allow the application to write directly to multiple independent databases simultaneously, ensuring that all regions have the latest data and no data is lost if one region fails.

Answer analysis

Option-by-option breakdown

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

  • Daily backups stored in the same data center

    Why it's wrong here

    Daily backups risk losing up to 24 hours of data and are in the same location.

  • Synchronous replication across regions

    Why this is correct

    Synchronous replication guarantees zero data loss as data is written to both sites before acknowledgment.

  • Asynchronous replication with hourly snapshots

    Why it's wrong here

    Asynchronous replication may lose up to an hour of data; RPO is higher.

  • Application-level multi-region writes

    Why this is correct

    Application-level writes to multiple regions ensure data is consistent across locations with minimal latency.

  • Periodic manual exports to on-premises storage

    Why it's wrong here

    Manual exports are infrequent and prone to human error, resulting in significant data loss.

Visual reference

Client Server SYN (seq=100) SYN-ACK (seq=200, ack=101) ACK (ack=201) Connection established — data transfer begins

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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