A Company Is Managing a NoSQL Database On-Premises to Host

question 170

Multiple Choice

A company is managing a NoSQL database on-premises to host a critical component of an application, which is starting to have scaling issues. The company wants to migrate the application to Amazon DynamoDB with the following considerations: Optimize frequent queries Reduce read latencies Plan for frequent queries on certain key attributes of the table Which solution would help achieve these objectives?

• A) Create global secondary indexes on keys that are frequently queried. Add the necessary attributes into the indexes.
• B) Create local secondary indexes on keys that are frequently queried. DynamoDB will fetch needed attributes from the table.
• C) Create DynamoDB global tables to speed up query responses. Use a scan to fetch data from the table.
• D) Create an AWS Auto Scaling policy for the DynamoDB table.

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Definitions:

Neutral Stimulus

A stimulus that initially produces no specific response other than focusing attention, until it is associated with an unconditioned stimulus.

Organism's Responding

The manner in which an organism reacts to stimuli or changes in its environment.

Conditioned Response

A learned reaction to a previously neutral stimulus that occurs as a result of conditioning, typically demonstrated in Pavlov’s dog experiment.

Unconditioned Response

A spontaneous, innate response to a trigger that happens without any previous training or conditioning.