CompTIA Cloud+ Practice Test

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What replication methodology would be best for a storage solution with an RPO of 24 hours and no impact on customer access?

Asynchronous
Regional
Multiregional
Synchronous

The correct answer is: Asynchronous

Asynchronous replication is the most suitable methodology for a storage solution with a recovery point objective (RPO) of 24 hours and a requirement for no impact on customer access. This methodology allows data to be replicated to a secondary site without needing to immediately synchronize changes to the primary site, which means that customer access and application performance remain unaffected during the replication process. Specifically, asynchronous replication involves taking snapshots or writing changes to the storage system at specified intervals rather than in real-time. This method is beneficial when there is a tolerance for some data latency, as is the case with an RPO of 24 hours. It ensures that, while there may be a lag in data being reflected at the secondary site, the primary site continues to operate smoothly without delays or slowdowns for users. In contrast, synchronous replication would require real-time replication of data, which can lead to significant delays and performance impacts on customer access during peak times. Regional and multiregional replication approaches often imply some level of geographical considerations and may not specifically address the requirement for no impact on access while maintaining the desired RPO.