When deploying a multi-tier web application in the cloud, which of the following strategies ensures better network performance and isolation between the application layers?

When deploying a multi-tier web application in the cloud, which of the following strategies ensures better network performance and isolation between the application layers?
A . Place all tiers in the same subnet for simpler management.
B . Set up each tier on different availability zones for redundancy.
C . Use a single large subnet and rely on security groups for network isolation.
D . Isolate each tier in its own subnet and apply network policies between the subnets.

View Answer

Answer: B

Explanation:

Isolating each tier in its own subnet and applying network policies between the subnets provides better security and performance, while ensuring separation of concerns between layers.