A company runs a shopping application that uses Amazon DynamoDB to store customer information. In case of data corruption, a solutions architect needs to design a solution that meets a recovery point objective (RPO) of 15 minutes and a recovery time objective (RTO) of 1 hour.

What should the solutions architect recommend to meet these requirements?

• A. Configure DynamoDB global tables. For RPO recovery, point the application to a different AWS Region.
• B. Configure DynamoDB point-in-time recovery. For RPO recovery, restore to the desired point in time.
• C. Export the DynamoDB data to Amazon S3 Glacier on a daily basis. For RPO recovery, import the data from S3 Glacier to DynamoDB.
• D. Schedule Amazon Elastic Block Store (Amazon EBS) snapshots for the DynamoDB table every 15 minutes. For RPO recovery, restore the DynamoDB table by using the EBS snapshot.

El hecho de hacer restore de un snapshot puede hacer que no llegue a hacerlo en 1 h. El point in time te deja recuperar en cualquier momento de los anteriores 35 días.

A company needs to keep user transaction data in an Amazon DynamoDB table. The company must retain the data for 7 years.

What is the MOST operationally efficient solution that meets these requirements?

• A. Use DynamoDB point-in-time recovery to back up the table continuously.
• B. Use AWS Backup to create backup schedules and retention policies for the table.
• C. Create an on-demand backup of the table by using the DynamoDB console. Store the backup in an Amazon S3 bucket. Set an S3 Lifecycle configuration for the S3 bucket.
• D. Create an Amazon EventBridge (Amazon CloudWatch Events) rule to invoke an AWS Lambda function. Configure the Lambda function to back up the table and to store the backup in an Amazon S3 bucket. Set an S3 Lifecycle configuration for the S3 bucket.

La c también es posible pero requiere mayor intervención manual. B es mas automatizable.

A company is planning to use an Amazon DynamoDB table for data storage. The company is concerned about cost optimization. The table will not be used on most mornings. In the evenings, the read and write traffic will often be unpredictable. When traffic spikes occur, they will happen very quickly.

What should a solutions architect recommend?

• A. Create a DynamoDB table in on-demand capacity mode.