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Answer: create an Application Load Balancer (ALB) that extends across multiple Availability Zones in both VPCs. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in both VPCs. Place the Auto Scaling group behind the ALB. B. Create a VPC in us-east-1 and a VPC in us-west-1. In the us-east-1VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in that VPC. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in the us-east-1VPC. Place the Auto Scaling group behind the ALB. Set up the same configuration in the us-west-1VPC. Create an Amazon Route 53 hosted zone. Create separate records for each ALB Enable health checks to ensure high availability between Regions. C. Create a VPC in us-east-1 and a VPC in us-west-1.In the us-east-1VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in that VPC. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in the us-east-1VPC. Place the Auto Scaling group behind the ALB. Set up the same configuration in the us-west-1 VPC. Create an Amazon Route 53 hosted zone. Create separate records for each ALB. Enable health checks and configure a failover routing policy for each record.
Option C is the correct solution for the financial services company's requirements. Here's why: 1. **High Availability**: The company needs high availability for their web application. By creating an Application Load Balancer (ALB) that spans multiple Availability Zones (AZs) in the us-east-1 VPC, they ensure that the application remains operational even if one AZ faces an outage. The Auto Scaling group also deploys EC2 instances across multiple AZs, further enhancing the application's resilience. 2. **Dynamic Scaling**: The Auto Scaling group will automatically adjust the number of EC2 instances based on the incoming traffic, ensuring that the application can handle varying loads without manual intervention. 3. **Disaster Recovery (Active-Passive Failover)**: To implement a disaster recovery environment in the us-west-1 Region, the company should replicate the same setup as in us-east-1. This includes creating a VPC, an ALB, and an Auto Scaling group in us-west-1, just like in the primary region. This setup ensures that if the primary region goes down, the application can be quickly switched to the secondary region. 4. **Route 53 for Failover**: Amazon Route 53 is used to manage DNS records for the application. By creating separate records for each ALB (one in us-east-1 and one in us-west-1) and enabling health checks, Route 53 can monitor the health of the application in both regions. If the primary region fails, Route 53 can automatically route traffic to the secondary region using a failover routing policy, ensuring minimal downtime. 5. **No Need for VPC Peering**: VPC peering is not required for this setup because the ALBs are not extending across both VPCs. Instead, each region has its own ALB and Auto Scaling group, and Route 53 handles the failover. In summary, option C meets all the requirements: high availability, dynamic scaling, and a disaster recovery setup with active-passive failover using Route 53 for traffic routing.
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Author: LeetQuiz Editorial Team
A financial services company in North America plans to release anew online web application to its customers on AWS. The company will launch the application in the us-east-1 Region on Amazon EC2 instances. The application must be highly available and must dynamically scale to meet user traffic. The company also wants to implement a disaster recovery environment for the application in the us-west-1 Region by using activepassive failover. Which solution will meet these requirements?
A
Create a VPC in us-east-1 and a VPC in us-west-1. Configure VPC peering. In the us-east-1 VPC. create an Application Load Balancer (ALB) that extends across multiple Availability Zones in both VPCs. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in both VPCs. Place the Auto Scaling group behind the AL
B
B. Create a VPC in us-east-1 and a VPC in us-west-1. In the us-east-1VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in that VP
C
create an Application Load Balancer (ALB) that extends across multiple Availability Zones in both VPCs. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in both VPCs. Place the Auto Scaling group behind the ALB. B. Create a VPC in us-east-1 and a VPC in us-west-1. In the us-east-1VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in that VPC. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in the us-east-1VPC. Place the Auto Scaling group behind the ALB. Set up the same configuration in the us-west-1VPC. Create an Amazon Route 53 hosted zone. Create separate records for each ALB Enable health checks to ensure high availability between Regions. C. Create a VPC in us-east-1 and a VPC in us-west-1.In the us-east-1VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in that VPC. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in the us-east-1VPC. Place the Auto Scaling group behind the ALB. Set up the same configuration in the us-west-1 VPC. Create an Amazon Route 53 hosted zone. Create separate records for each ALB. Enable health checks and configure a failover routing policy for each record.
D
Create a VPC in us-east-1 and a VPC in us-west-1. Configure VPC peering. In the us-east-1VPC, create an Application Load Balancer (ALB) that extends across multiple Availability Zones in both VPCs. Create an Auto Scaling group that deploys the EC2 instances across the multiple Availability Zones in both VPCs Place the Auto Scaling group behind the ALB. Create an Amazon Route 53 hosted zone. Create a record for the ALB.