AWS Certified Cloud Practitioner — Question 259

Which AWS services use cloud-native storage that provides replication across multiple Availability Zones by default? (Choose two.)

Answer options

• A. Amazon ElastiCache
• B. Amazon RDS for Oracle
• C. Amazon Neptune
• D. Amazon DocumentDB (with MongoDB compatibility)
• E. Amazon Redshift

Correct answer: C, D

Explanation

Amazon Neptune and Amazon DocumentDB both leverage cloud-native storage with built-in replication across multiple Availability Zones, ensuring high availability and durability. In contrast, Amazon ElastiCache, Amazon RDS for Oracle, and Amazon Redshift do not provide this specific feature of automatic cross-AZ replication by default.