Q19 — AWS DEA-C01 Ch.1

Question 19 of 100 | ← Chapter 1

A company currently stores all of its data in Amazon S3 by using the S3 Standard storage class. A data engineer examined data access patterns to identify trends. During the first 6 months, most data files are accessed several times each day. Between 6 months and 2 years, most data files are accessed once or twice each month. After 2 years, data files are accessed only once or twice each year. The data engineer needs to use an S3 Lifecycle policy to develop new data storage rules. The new storage solution must continue to provide high availability. Which solution will meet these requirements in the MOST cost-effective way?

• A. A. Transition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 6 months. Transfer objects to S3 Glacier Flexible Retrieval after 2 years.
• B. Transition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer objects to S3 Glacier Flexible Retrieval after 2 years.
• C. Transition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer objects to S3 Glacier Deep Archive after 2 years. ✓
• D. Transition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 6 months. Transfer objects to S3 Glacier Deep Archive after 2 years.

Correct Answer: C. Transition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer objects to S3 Glacier Deep Archive after 2 years.

Explanation

根据数据访问模式，前6个月数据访问频繁，适合使用S3Standard。6个月至2年期间，数据访问频率降低，适合转移到S3Standard-IA以降低成本。2年后，数据很少访问，最适合转移到成本更低的S3GlacierDeepArchive。S3GlacierFlexibleRetrieval虽然也提供低成本存储，但其检索费用较高，不适合极少访问的数据。因此，选项C是最具成本效益的解决方案。