Question

Which of the following features of Amazon RDS allows for better availability of databases? Choose the answer from the options given below.

A. VPC Peering

B. Multi-AZ

C. Read Replicas

D. Data encryption

Answer 1

B. Multi-AZ

Explanation : 

The AWS Documentation mentions the following.

If you are looking to use replication to increase database availability while protecting your latest database updates against unplanned outages, consider running your DB instance as a Multi-AZ deployment.