AWS Certified Cloud Practitioner
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A company is running a key-value NoSQL workload on Amazon EC2 instances. The company needs the workload to have scalability, failover protection, and backup capabilities.
What is the MOST operationally efficient way to meet these requirements?
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RRitesh
A
Add additional EC2 instances to the database cluster.
B
Run an identical copy of the database in a second Availability Zone.
C
Migrate the database to Amazon DynamoDB.
D
Migrate the database to a relational database.
Explanation:
Explanation
Amazon DynamoDB is a fully managed NoSQL database service that provides:
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Automatic scalability: DynamoDB automatically scales up and down based on workload demands without manual intervention
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Built-in high availability and failover protection: DynamoDB automatically replicates data across multiple Availability Zones and provides automatic failover
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Automated backups: DynamoDB offers point-in-time recovery and on-demand backup capabilities
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Operational efficiency: As a fully managed service, DynamoDB eliminates the operational overhead of managing EC2 instances, patching, scaling, and backup management
Why other options are less efficient:
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Option A: Adding EC2 instances requires manual scaling management and doesn't provide automatic failover protection
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Option B: Running a copy in another AZ provides some failover protection but still requires manual management of scaling, backups, and failover coordination
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Option D: Migrating to a relational database would require significant schema changes and may not be suitable for key-value NoSQL workloads
DynamoDB is specifically designed for key-value NoSQL workloads and provides all the required features as a managed service, making it the most operationally efficient solution.
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