AWS Certified Cloud Practitioner
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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?
Real Exam
Community
RRitesh
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:
Explanation
Amazon RDS with Multiple Availability Zones provides high availability and fault tolerance by:
-
Automatic failover: If the primary database instance fails, RDS automatically fails over to the standby replica in a different Availability Zone
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Data redundancy: Synchronous replication ensures data consistency across Availability Zones
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Fault tolerance: Protects against AZ-level failures and infrastructure issues
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High availability: Maintains database availability even during maintenance events
Why other options are incorrect:
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Single Availability Zone: Only provides a single instance with no automatic failover capability
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RDS snapshots: Used for backup and restore, not for high availability
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AWS DMS: Used for database migration, not for providing high availability
For PostgreSQL databases requiring high availability and fault tolerance, Amazon RDS Multi-AZ deployment is the recommended solution.
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