Question

You are a solutions engineer working for a large communications 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

Answer 1

4 subnets

Step-by-step explanation:

According to the specifications provided, it seems that you would need a total of 4 subnets for the entire server structure. This is because each web server needs 1 public subnet and each database needs one private subnet. If there are a total of 2 web servers and 2 database servers then each one will ultimately have 2 subnets meaning a total of 4 subnets. These would be 2 public subnets and 2 private subnets for the different availability zones, which would allow the server structure to maintain high availability.