When designing a typical three-tier web application, which AWS services and/or features improve availability and reduce the impact failures? (Choose two.)
A) AWS Auto Scaling for Amazon EC2 instances
B) Amazon VPC subnet ACLs to check the health of a service
C) Distributed resources across multiple Availability Zones
D) AWS Server Migration Service (AWS SMS) to move Amazon EC2 instances into a different Region
E) Distributed resources across multiple AWS points of presence

Question

Quizplus · Accepted Answer

AWS Auto Scaling for Amazon EC2 instances helps maintain application availability by automatically adjusting the number of EC2 instances to handle the load. Distributing resources across multiple Availability Zones increases fault tolerance and availability by ensuring that the application can continue to operate even if one zone fails.

When Designing a Typical Three-Tier Web Application, Which AWS Services