Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 345 discussion

B is right To implement disaster recovery in an active-passive configuration, you should deploy the application infrastructure across multiple Availability Zones (AZs) in each Region with the primary region being us-east-1. By having an Application Load Balancer (ALB) spanning multiple AZs in the us-east-1 Region and EC2 instances as part of an Auto Scaling group served by this ALB, you can achieve dynamic scaling to meet user demand. To ensure high availability across both Regions, create an Amazon Route 53 record set with a failover routing policy that directs traffic from the us-west-1 Region to the primary infrastructure in the us-east-1 Region when available. Enable health checks for this Route 53 record set to ensure that traffic is directed away from unhealthy endpoints, providing a seamless user experience while ensuring resiliency and disaster recovery capabilities.

ALB can't span VPCs in different regions, the key statement in B is "Deploy the same solution in us-west-1"

B. Peering is not needed here as we dont need syncing of environments

Option B - https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-types.html

My Answer is also B but i feel D is also same as B.. Only difference is the words. B " Create an Amazon Route 53 record set with a failover routing policy and health checks enabled to provide high availability across both Regions" D "Create separate Amazon Route 53 records in each Region that point to the ALB in the Region. Use Route 53 health checks to provide high availability across both Regions" Can someone clarify???

Option B

B is correct Route 53 failover policy. A and C wrong - ALB can't span VPC which are in different regions. ALB is region specific service

Answer B. ALB + Autoscaling of EC2 instances on both regions. Route53 with Failover routing policy.

B for sure

B for sure

B is the correct answer