You need to change the shard key of an existing MongoDB collection. What do you do?

Polyglot storage means using multiple types of what in the same application?

You need to implement the simplest possible scalable, in-memory cache for your AWS application. Which service do you select?

You are doing data modelling for Google BigTable. Which statement expresses if and when you should split entities across multiple rows?

Which two characteristics define Amazon Quantum Ledger Database?

You need to design the primary key for DynamoDB based on three attributes. What do you do?

Which statement accurately describes global secondary indexes in DynamoDB?

Which method shows you whether MongoDB uses any indexes when running a query, and how the indexes are used?

You want to return a list of all elements in two Redis sets. Which keyword do you use?

You need to generate a unique, sequential identifier for each value stored in a Redis cluster. What do you do?

You need to encrypt data at rest in DynamoDB. Which action do you take?