Question

You are a solutions architect working for a large travel company that is migrating its existing server estate to AWS. You have recommended that they use a custom Amazon VPC, and they have agreed to proceed. They will need a public subnet for their web servers and a private subnet in which to place their databases. They also require that the web servers and database servers be highly available and that there be a minimum of two web servers and two database servers each. How many subnets should you have to maintain high availability?

A. 2
B. 3
C. 4
D. 1

Answer 1

C. 4. Subnets

Step-by-step explanation:

You need two public subnets (one for each Availability Zone) and two private subnets (one for each Availability Zone). Therefore, you need four subnets.