CompTIA Cloud+ Practice Test

What term describes the method of copying data to both primary storage and remote sites while keeping it in sync?

1. Asynchronous Replication

2. Synchronous Replication

3. Data Mirroring

4. Backup Replication

The correct answer is: Synchronous Replication

Synchronous replication refers to the process of copying data to both primary storage and remote sites in real-time, ensuring that both copies of the data remain consistent with each other at all times. In this method, any change made to the primary data storage is simultaneously recorded in the remote system. This approach is critical for applications requiring high availability and data integrity, as it minimizes the risk of data loss. In environments where data is crucial, synchronous replication is often favored because it provides immediate consistency across locations, which is vital during disaster recovery scenarios, as it ensures that both primary and secondary copies of the data are always up to date. Other methods like asynchronous replication, while useful, involve a delay between the primary and remote storage, where data changes in the primary location may not be instantly reflected in the remote site. Data mirroring typically describes a scenario where data stays identical across different storage mediums, but may not always involve real-time updates in the same way as synchronous replication does. Backup replication generally refers to creating backup copies of the data rather than maintaining ongoing synchronization, which can introduce a lag that is unacceptable in many critical business applications.