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【SAA-C03助理级解决方案架构师认证】
A company has an application running on a single server in one Availability Zone.A solutions architect needs to improve the availability of this application as it grows in importance.
Which set of actions would accomplish this?
A : Deploy a second application instance in the same Availability Zone. Add the instances to
Amazon Route53in a round-robin same configuration.
B : Deploy a second application instance in a public subnet in the same Availability Zone.
Attach an Elastic IP address to both instances for high availability.
C : Redeploy the application instance in an Amazon EC2 Auto Scaling group with a minimum of 1 and a maximum of 1. Use AWS CloudFormation to automate the deployment.
D : Deploy an Elastic Load Balancer and a second application instance in a second Availability Zone. Attach both instances to the Elastic Load Balancer and route all traffic through the load balancer.