SAA-C03 Question #527: Real Exam Question with Answer & Explanation

Question

A solutions architect needs to build a log storage solution for a client. The client has an application that produces user activity logs that track user API calls to the application. The application typically produces 50 GB of logs each day. The client needs a storage solution that makes the logs available for occasional querying and analytics. Which solution will meet this requirement?

Options

• AStore user activity logs in an Amazon S3 bucket. Use Amazon Athena to perform queries and
• BStore user activity logs in an Amazon OpenSearch Service cluster. Use OpenSearch Dashboards
• CStore user activity logs in an Amazon RDS instance. Use an Open Database Connectivity
• DStore user activity logs in an Amazon CloudWatch Logs log group. Use CloudWatch Logs

Explanation

For infrequent or ad hoc querying of log data, Amazon S3 + Amazon Athena provides the most cost-effective, serverless, and scalable analytics solution. "Amazon Athena is an interactive query service that makes it easy to analyze data in Amazon S3 using standard SQL. Athena is serverless, so there is no infrastructure to manage, and you pay only for the queries that you run." Why A is correct: Amazon S3 offers durable, scalable, and cost-efficient storage. Athena allows SQL-based querying on structured or semi-structured data like logs. No need to provision or manage infrastructure. Ideal for occasional querying at low cost. Why the others are not optimal: Option B: OpenSearch adds cost and is best for frequent, low-latency log querying. Option C: RDS is not optimized for large-scale write-heavy log ingestion and costs more. Option D: CloudWatch Logs is suitable for real-time monitoring, not for long-term storage and analytics of large log volumes.

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