QuickDialog is a multimedia company running a messaging app. One of the principal features of QuickDialog is that pictures and messages are usually only available for a short time before they become inaccessible to users. The app has evolved from originally centering on person-to-person photo sharing to present users` "Stories" of 24 hours of sequential content, along with "Discover", allowing brands show ad-supported short-form media.
QuickDialog is using RDS to support their existing mobile application and are facing lot of issues in terms of scalability, performance and high availability. They are considering DynamoDB to migrate the platform. QuickDialog is evaluating whether the DynamoDB database fulfills the enterprise-grade platform capabilities. please advise why do you think is an enterprise-grade platform. Select 4 options.

Answer options:

A.DynamoDB can support mission-critical workloads by enabling consistency and durability in ACID transactions
B.Encryption of data at rest
C.Point-in-time recovery (PITR) can be enabled for DynamoDB
D.Query data lake built on S3
E.On-demand backup and restore

Answer: A, B, C, E
Option A is correct -DynamoDB provides native, server-side support for transactions, simplifying the developer experience of making coordinated, all-or-nothing changes to multiple items both
within and across tables. With support for transactions, platform can be extended to scale, performance, and enterprise benefits of DynamoDB to a broader set of mission-critical workloads
https://aws.amazon.com/dynamodb/features/
Please refer # 11 in the below link
https://blog.yugabyte.com/11-things-you-wish-you-knew-before-starting-with-dynamodb/
Option B is correct -DynamoDB encrypts all customer data at rest by default. Encryption at rest enhances the security of your data by using encryption keys stored in AWS Key Management Service.
https://aws.amazon.com/dynamodb/features/
Option C is correct -Point-in-time recovery is achieved by protecting DynamoDB tables from accidental write or delete operations. PITR provides continuous backups of your DynamoDB table data, and you can restore that table to any point in time up to the second during the preceding 35 days.
https://aws.amazon.com/dynamodb/features/
Option D is incorrect -cannot query the data lake built on S3. Besides Redshift extend queries to your Amazon S3 data lake without loading data. You can query open file formats you already use, such as Avro,
CSV, Grok, JSON, ORC, Parquet, and more, directly in S3
https://aws.amazon.com/redshift/features/
Option E is correct -On-demand backup and restore allows you to create full backups of your DynamoDB tables’ data for data archiving, which can help you meet your corporate and governmental regulatory requirements.
https://aws.amazon.com/dynamodb/features/