When working on the costing for on-demand EC2 instances, which of the following are attributes which determine the costing of the EC2 Instance.

What is the most appropriate routing policy to implement in Amazon Route 53, when a web application co-located in two geographically distinct locations is experiencing degraded service in one of the locations.

What is the concept of an AWS region?

What is the AWS service provided which provides a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability.