CompTIA
CV0-003 · Question #253
CV0-003 Question #253: Real Exam Question with Answer & Explanation
The correct answer is C: Synchronous. Synchronous replication achieves the shortest RPO because data is written to both primary and secondary locations simultaneously before a write is acknowledged, resulting in near-zero data loss.
Operations and Support
Question
Which of the following data replication methods provides the shortest RPO?
Options
- AAsynchronous
- BFull
- CSynchronous
- DIncremental
Explanation
Synchronous replication achieves the shortest RPO because data is written to both primary and secondary locations simultaneously before a write is acknowledged, resulting in near-zero data loss.
Common mistakes.
- A. Asynchronous replication writes data to the primary first and replicates to the secondary after a lag, creating a potential data loss window and a longer RPO than synchronous.
- B. Full backup is a periodic method where RPO equals the time elapsed since the last backup completed, typically resulting in hours or days of potential data loss.
- D. Incremental backup captures only changes since the last backup and runs on a schedule, so RPO is tied to the backup interval rather than being near-zero.
Concept tested. Data replication methods and Recovery Point Objective (RPO)
Reference. https://learn.microsoft.com/en-us/azure/storage/common/storage-redundancy
Topics
#synchronous replication#RPO#data replication#disaster recovery
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