Your DevOps team maintains a SaaS platform. In the platform, whenever an existing user modifies its subscription information, an email will be sent to the user which includes some important information. The subscription data is stored in a DynamoDB table, and its Stream is enabled to capture the changes to the table items. A Java application is monitoring the Stream data and sends the email accordingly. About the usage of DynamoDB Streams, which statement is right?

Answer options:

A.The Java application can only view the data items as they appeared after they were modified.
B.The data in DynamoDB Streams is also encrypted.
C.DynamoDB Streams can only write a stream record when items in the table are created or updated.
D.The information in the Stream log is stored forever.

Correct Answer –B
The features of DynamoDB Streams can be found in the document of
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.html.
Option A is incorrect: Because the data items as they appeared before they were modified can also be saved in the Stream.
Option B is CORRECT: Because the data in both DynamoDB table (at rest) and DynamoDB Streams is fully encrypted.
Option C is incorrect: Because a DynamoDB Stream records information about each modification to data items in the table including adding, modifying and deleting.
Option D is incorrect: Because the information in the log can only be stored for 24 hours.