Review questions

1. Our application is storing project data in a DynamoDB table. You need to run a query to find all the builds that were run by a specific department last month. Which attributes would you use in your query?

   a. The partition key of Build_Date and the sort key of Department

   b. A composite primary key made up of Department and Build_Date

   c. The partition key of Department and the sort key of Build_Date

   d. The partition key of Build_Date and the sort key of Dept_ID

2. Which of the following AWS services provides an in-memory write-through cache that has been optimized for DynamoDB?

   a. ElastiCache

   b. CloudFront

   c. DAX

   d. Athena

3. A scan operation in DynamoDB is used for which of the following scenarios?

   a. To return the entire contents of the table, filtered on the primary or sort key

   b. To find items in a table based on a primary key attribute

   c. To find items in a table based on a sort key attribute

   d. To return all the items in a table

4. Your developers have created...