What should the SysOps administrator do to meet this requirement?
Enable DynamoDB Accelerator (DAX).
Enable DynamoDB Streams, and add a global secondary index (GSI).
Enable DynamoDB Streams, and add a global table Region.
Enable point-in-time recovery.
Explanations:
Enabling DynamoDB Accelerator (DAX) improves read performance for applications by caching results but does not provide data replication to another region for disaster recovery purposes.
Enabling DynamoDB Streams allows tracking changes to items in a table but adding a global secondary index (GSI) does not facilitate cross-region replication. GSIs are used for query optimization, not for data replication.
Enabling DynamoDB Streams and adding a global table Region allows for the replication of data across multiple AWS Regions, supporting disaster recovery. Global tables automatically replicate data between regions to ensure availability and durability.
Enabling point-in-time recovery (PITR) allows for recovering the table to a specific point in time but does not replicate data to another AWS Region. It is primarily for backup and restore capabilities within the same region.
I think the answer is:
Enable DynamoDB Streams, and add a global table Region.