Review

To check your knowledge of this chapter, here are five questions that you should be able to answer. Remember the exam techniques from Chapter 1, AWS Certified Database – Specialty Exam Overview, and remove the incorrect answers first to help yourself:

1. A customer is developing a new application. Information will be uploaded from a large number of different devices. The customer is concerned about unexpectedly high volumes of data being loaded and exceeding the storage that's been allocated to the database. What steps can they take to simply and cost-effectively solve this issue?
   1. Migrate from RDS to EC2 and turn on autoscaling for the instance's compute.
   2. Use S3 to store the incoming data and build a lambda function to merge the updates to RDS.
   3. Enable storage autoscaling for the RDS instance.
   4. Create a read replica and send the read-only traffic to it.
2. You are using a new RDS PostgreSQL database. You are unable to connect to the database using pgsql. What...