ExpertHard1 markMultiple Choice
AWS SAA-C03 · Question 24 · Domain 2.2: Highly Available Architectures
A global application is deployed in the us-east-1 and eu-west-1 regions. Users should be routed to the region that provides the lowest network delay. If a region goes offline, all traffic must be routed to the remaining region. How should Route 53 be configured?
A global application is deployed in the us-east-1 and eu-west-1 regions. Users should be routed to the region that provides the lowest network delay. If a region goes offline, all traffic must be routed to the remaining region. How should Route 53 be configured?
Answer options:
A.
Use a Failover routing policy with Route 53 health checks.
B.
Use a Geolocation routing policy with Route 53 health checks.
C.
Use a Latency routing policy with Route 53 health checks enabled for both regions.
D.
Use a Multivalue Answer routing policy.
How to approach this question
Combine the requirement for 'lowest network delay' (Latency) with 'failover' (Health Checks).
Full Answer
C.Use a Latency routing policy with Route 53 health checks enabled for both regions.✓ Correct
Use a Latency routing policy with Route 53 health checks enabled for both regions.
Route 53 Latency routing policy routes traffic to the region that provides the lowest latency. By associating Route 53 health checks with the records, Route 53 will automatically route traffic away from an unhealthy region to the healthy one.
Common mistakes
Choosing Failover routing, which ignores latency and just acts as an active/passive switch.
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