An application is making calls to a DynamoDB table. The queries are taking on a lot of read capacity. The table has a large number of attributes. Not all of the attributes are used in the query. Which of the following can be used to minimize the read capacity being used by the queries?

Answer options:

A.Use global secondary indexes with projected attributes.
B.Use an Application Load balancer in front of the DynamoDB table.
C.Consider using parallel scans on the table.
D.Use a cloudfront distribution in front of the DynamoDB table.

Answer – A
You can use Global secondary indexes and use only those attributes which will be queried. This can help reduce the amount of read throughput used on the table.
Options B and D are invalid because these are invalid architecture designs.
Option C is incorrect since using queries is more effective.
For more information on general guidelines for indexes, please refer to the below URL-
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-indexes-general.html