AWS Certified Data Engineer Associate DEA-C01 Practice Question
A data engineering team stores user activity logs in an Amazon S3 bucket. The logs are queried frequently for the first 30 days, but after that they are rarely accessed. Compliance rules require the logs to be retained for 5 years and to be retrievable within 12 hours for quarterly audits. To minimize storage costs while still meeting these requirements, which S3 Lifecycle configuration is MOST appropriate?
Add a Lifecycle rule that transitions objects to S3 Glacier Deep Archive 30 days after upload and expires them after 5 years.
Add a Lifecycle rule that places objects in the S3 Intelligent-Tiering Archive Access tier after 30 days and expires them after 5 years.
Add a Lifecycle rule that transitions objects to S3 Standard-IA 30 days after upload and permanently deletes them after 5 years.
Add a Lifecycle rule that moves objects to S3 Glacier Instant Retrieval after 30 days and removes them after 5 years.
S3 Glacier Deep Archive offers the lowest storage price of all S3 storage classes and provides Standard retrievals that complete within 12 hours-meeting the audit requirement. Transitioning the objects after 30 days captures the point at which access frequency drops, and an Expiration action at 5 years enforces the retention period.
Standard-IA, Intelligent-Tiering Archive Access, and Glacier Instant Retrieval all satisfy the 12-hour retrieval window but incur higher ongoing storage or monitoring costs than Glacier Deep Archive, so they are not the most cost-effective choice.
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AWS Certified Data Engineer Associate DEA-C01
Data Store Management
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