ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

Asynchronous streaming replication to a hot standby in the same region continuously ships WAL records to the standby, keeping replicas typically seconds behind the primary-well within a 5-minute RPO. Because the primary does not wait for acknowledgements, write-latency overhead is minimal, and a promotion script or managed service can trigger automatic failover. Nightly backups provide no real-time copy and require manual restore, so they miss both the RPO and failover goals. Synchronous cross-region replication meets a strong RPO but adds commit latency because each write must be acknowledged over a longer network path. Exporting change-data-capture feeds to an analytics cluster is intended for reporting, not operational failover, and usually lacks automatic promotion capability.