Chapter 5

1. 3

Creating a multi-AZ deployment with another read replica works, but it isn't the most cost-efficient.

Moving to EC2 is not a valid solution.

Creating a multi-AZ read replica is a cost-effective and highly-available solution, and is correct.

Creating two single-AZ read replicas is not highly available.

2. 4

RDS only supports multi-AZ in the same region.

Aurora Global Tables will work, but this is the incorrect process, as you need read replicas.

Deploying MySQL in two regions will not work as there is no replication.

Global tables will work and it uses read replicas, so this is the correct answer.

3. 2

Aurora does not fully meet the needs of this scenario.

Aurora Serverless will meet the needs of the temporary nature of the application.

RDS does not fully meet the needs of this scenario.

MySQL on EC does not fully meet the needs of this scenario.

4. 1

Creating read replicas in a different region...