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Enhancing Data Durability in Amazon S3: Exam Question Breakdown
Explore a critical AWS Certified Data Engineer question on enhancing data durability in S3, and learn how to ace it.
Ensuring data availability in Amazon S3 is a common challenge for candidates. The nuances of durability versus availability often trip people up. Let's break down a question that tests this knowledge.
The question
You are tasked with ensuring the availability of data stored in Amazon S3. Which of the following actions should you take to enhance data durability?
A. Use S3 versioning to keep multiple variants of an object.
B. Enable S3 Transfer Acceleration for faster uploads.
C. Store the data in the S3 One Zone-IA storage class.
D. Use CloudFront to distribute the data.
Think before you scroll
Evaluate the options based on their impact on data durability. Remember, durability means protecting data from loss, while availability relates to access and uptime. Choose the option that directly addresses durability.
The answer
The correct option is A: Use S3 versioning to keep multiple variants of an object. This feature increases data durability by enabling recovery from accidental deletions or overwrites.
Why the other options lose
B. Enable S3 Transfer Acceleration for faster uploads.
While this option speeds up data uploads, it does not contribute to data durability. It focuses solely on improving the efficiency of data transfer, not protecting the data itself.
C. Store the data in the S3 One Zone-IA storage class.
This class is designed for infrequently accessed data but offers lower durability compared to the standard S3 storage classes. It is not suitable for enhancing data durability as it lacks redundancy across multiple Availability Zones.
D. Use CloudFront to distribute the data.
CloudFront is a content delivery network that helps with data distribution but does not impact the durability of the data stored in S3. It focuses on performance and access, not protection against data loss.
The concept behind it
Data durability in S3 is primarily about maintaining multiple versions of objects. S3 versioning is essential for recovering from user errors, ensuring that even if data is deleted or overwritten, a previous version remains accessible. This principle is crucial for anyone handling sensitive or critical data.
Exam trap to remember
Remember: S3 versioning provides multiple object variants, enhancing durability. Other options may improve performance but do not protect your data from loss.