QuestionQ103

Content Domain 3: Cloud Technology and Services

A company needs to deploy a PostgreSQL database into Amazon RDS. The database must be highly available and fault tolerant.

Which AWS solution should the company use to meet these requirements?

  • A Amazon RDS with a single Availability Zone
  • B Amazon RDS snapshots
  • C Amazon RDS with multiple Availability Zones
  • D AWS Database Migration Service (AWS DMS)
Explanation

Amazon RDS with multiple Availability Zones provides high availability and automatic failover. In a Multi-AZ deployment, a standby replica is maintained in a different AZ and automatically promoted if the primary fails. Single AZ deployment has no failover capability, snapshots are for backup/recovery only, and DMS is for data migration, not availability.

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