Which is the SIMPLEST solution to achieve this policy?
Two Auto Scaling applications, Application A and Application B, currently run within a shared set of subnets. A Solutions Architect wants to make sure that Application A can make requests to Application B, but Application B should be denied from making requests to Application A.
Which is the SIMPLEST solution to achieve this policy?
A. Using security groups that reference the security groups of the other application
B. Using security groups that reference the application server’s IP addresses
C. Using Network Access Control Lists to allow/deny traffic based on application IP addresses
D. Migrating the applications to separate subnets from each other
Answer: A