Exam AWS Certified Developer Associate topic 1 question 205 discussion

B: One Zone-Infrequent Access can only be used for data that is tolerable for loss C & D: In both cases, the access time will be different for recently updated images and old images A: Correct. Since Intelligent tiering moves data only between the Frequent Access tier, Infrequent Access tier, and Archive Instant Access tier by default. All 3 provide low latency and high-throughput performance. https://docs.aws.amazon.com/AmazonS3/latest/userguide/intelligent-tiering-overview.html#intel-tiering-tier-definition

D. - **Suitability**: S3 Glacier Flexible Retrieval provides a balance between cost and retrieval times, offering faster access compared to Glacier Deep Archive but at a higher cost. - **Effort**: Similar to option C, implementing this option involves configuring an S3 Lifecycle policy. However, managing retrieval times and costs may require additional effort. - **Consistency**: While retrieval times from S3 Glacier Flexible Retrieval are faster than Glacier Deep Archive, they may still not meet the requirement of consistent access times for users.

C. - **Suitability**: S3 Glacier Deep Archive is a very low-cost storage class designed for long-term retention of data that is rarely accessed. However, accessing data from Glacier Deep Archive requires longer retrieval times, which may not meet the requirement of consistent access times for users. - **Effort**: Implementing this option involves configuring an S3 Lifecycle policy to transition older images to Glacier Deep Archive. However, it may require additional effort to manage retrieval times and potential impacts on user experience. - **Consistency**: Retrieving data from Glacier Deep Archive can take several hours, which may not provide consistent access times for users.

B. - **Suitability**: S3 One Zone-IA is a lower-cost storage class designed for infrequently accessed data. However, it's stored in a single Availability Zone, which may not provide the same level of durability as S3 Standard or S3 Intelligent-Tiering. - **Effort**: Modifying the application to use S3 One Zone-IA would require changes to the application's code to specify the storage class for each image uploaded, as well as potential changes to handle the lower durability of data stored in a single Availability Zone. - **Consistency**: While S3 One Zone-IA can provide consistent access times for images within its single Availability Zone, it may not be suitable for applications requiring higher durability and availability.

A. - **Suitability**: This option is suitable because S3 Intelligent-Tiering automatically moves objects between access tiers based on their access patterns, optimizing costs without requiring changes to the application's code. - **Effort**: This option requires minimal effort as it involves only configuring the storage class for the images in the S3 bucket. The application code remains unchanged. - **Consistency**: S3 Intelligent-Tiering ensures consistent access times for users regardless of the age of the images.

A is correct because, the Intelegient tier will by default not move to the Archive access tiers but only move between Frequently accessed, Infrequently access and Archive instant retrival The three classes provide "latency and high-throughput performance" as explained in this user guide https://docs.aws.amazon.com/AmazonS3/latest/userguide/intelligent-tiering-overview.html B can not be correct because it is for data that can be recreated c can not be correct because flexible retrieval time is from one minute and could take hours to get the archived files

"Users must be able to access all images in the same amount of time" For people who say "A" what happen if i don't access to photo more than 180 day ?! it's will move to Glacier or deep so after 200 day i decided to get photo i can get it same amount of time ?! or i have to wait 1 to 5 min if Glacier or more if deep right ?! so better answer is "B"

At first, I was thinking A, However, I picked B. Question is asking about optimizing cost, not durability or availability.

Using an S3 Lifecycle policy to move images that were uploaded more than 1 week ago to S3 Glacier Flexible Retrieval is the most cost-effective solution that meets the requirement. Glacier Flexible Retrieval is designed for data that is infrequently accessed, and the retrieval time is configurable, so users can access all images in the same amount of time, regardless of when the images were uploaded. Therefore, option D is the correct answer.

Not A, not B: Information about the frequency of access changing after one week clearly points toward a lifecycle policy Not C: Storage in the S3 Glacier Deep Archive has slow access and thus violates the "Users must be able to access all images in the same amount of time, regardless of when the images were uploaded" requirement D is the perfect match for the described use-case

The Amazon S3 Intelligent-Tiering storage class is designed to optimize storage costs by automatically moving data to the most cost-effective access tier when access patterns change. For a small monthly object monitoring and automation charge, S3 Intelligent-Tiering monitors access patterns and automatically moves objects that have not been accessed to lower-cost access tiers.

I was thinking about "B" but then i got to know that "S3 Intelligent-Tiering " works well with frequent and infrequent access with the best performance. So it's "B".

It's definitely A. It's the reason companies like Shutterstock use intelligent tiering.

A is the correct one

AAAAA is the correct option.

It seems be B option, same "time to recover files"

https://aws.amazon.com/s3/storage-classes/intelligent-tiering/ Amazon S3 Intelligent-Tiering is the only cloud storage class that delivers automatic storage cost savings when data access patterns change, without performance impact or operational overhead.