nerdexam
Amazon

DBS-C01 · Question #358

A global company is creating an application. The application must be highly available. The company requires an RTO and an RPO of less than 5 minutes. The company needs a database that will provide…

The correct answer is C. Amazon DynamoDB global tables. To meet requirements for a highly available, active-active multi-Region database with near real-time synchronization and RTO/RPO less than 5 minutes, Amazon DynamoDB global tables are the optimal solution.

Submitted by femi9· Mar 6, 2026Workload-Specific Database Design

Question

A global company is creating an application. The application must be highly available. The company requires an RTO and an RPO of less than 5 minutes. The company needs a database that will provide the ability to set up an active-active configuration and near real-time synchronization of data across tables in multiple AWS Regions. Which solution will meet these requirements?

Options

  • AAmazon RDS for MariaDB with cross-Region read replicas
  • BAmazon RDS with a Multi-AZ deployment
  • CAmazon DynamoDB global tables
  • DAmazon DynamoDB with a global secondary index (GSI)

How the community answered

(26 responses)
  • A
    23% (6)
  • B
    4% (1)
  • C
    58% (15)
  • D
    15% (4)

Why each option

To meet requirements for a highly available, active-active multi-Region database with near real-time synchronization and RTO/RPO less than 5 minutes, Amazon DynamoDB global tables are the optimal solution.

AAmazon RDS for MariaDB with cross-Region read replicas

Amazon RDS with cross-Region read replicas primarily offers read scaling and disaster recovery, but the replicas are read-only, preventing an active-active write configuration across regions.

BAmazon RDS with a Multi-AZ deployment

Amazon RDS Multi-AZ deployment provides high availability and automatic failover *within a single AWS Region*, not across multiple Regions for active-active synchronization.

CAmazon DynamoDB global tablesCorrect

Amazon DynamoDB global tables provide a fully managed, multi-Region, active-active database that allows applications to read and write data in multiple AWS Regions simultaneously. It automatically replicates data changes across all specified Regions with near real-time consistency, which directly addresses the requirement for active-active configuration and cross-Region synchronization with low RTO/RPO.

DAmazon DynamoDB with a global secondary index (GSI)

A global secondary index (GSI) is a feature for querying data within a single DynamoDB table on non-primary key attributes; it does not provide multi-Region replication or active-active capabilities.

Concept tested: Multi-Region active-active database solutions with low RPO/RTO

Source: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GlobalTables.html

Topics

#Global applications#high availability#RTO/RPO#DynamoDB Global Tables

Community Discussion

No community discussion yet for this question.

Full DBS-C01 Practice