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【SAA-C03助理级解决方案架构师认证】
A company needs to meet a strict service level agreement(SLA) with its users for application availability. The primary application stack is hosted in the us-east-1Region and a replica of the stack is in us-west-2 for disaster recovery. The company requires that no user traffic be served by the application stack in us- west-2 unless there is an issue with the
application stack in us-east-1. What should a solutions architect do to meet the company's needs without manual intervention?
A : Configure a weighted routing policy in Amazon Route 53. Set the weight of us-east- 1 to 100 and us- west-2 to 0.
B : Configure a weighted routing policy in Amazon Route 53. Set the weight of us-west-2 to 50 and us-east- 1to 50.
C : Configure a failover routing policy in Amazon Route 53. Set us-east-1as the primary and us- west-2 as the secondary.
D : Configure a failover routing policy in Amazon Route 53. Set us-west-2 as the primary and us-east-1 as the secondary.