ANS-C01 Question 241
Select 3Your company has deployed a multi-region application on AWS to ensure high availability and low latency for users across the globe. The application uses Amazon Route 53 for DNS routing. The team needs to ensure that traffic is directed to the closest region based on latency, with automatic failover to another region in case the primary region becomes unreachable. Which combination of configurations in Route 53 will meet this requirement?
- A
Use a Route 53 Latency routing policy to direct users to the region with the lowest latency.
- B
Configure Route 53 Health Checks for the resources in each region to monitor their availability.
- C
Use a Route 53 Multi-Value Answer routing policy to ensure failover capability across regions.
- D
Use a Route 53 Geolocation routing policy to direct users to specific regions based on their location.
- E
Combine Route 53 Latency routing policy with Health Checks to route traffic based on latency and failover automatically.
Show answer and explanation
Correct answers: A, B, E
Explanation
To meet the requirement of routing traffic to the closest region based on latency with automatic failover, you should use the Route 53 Latency routing policy combined with Health Checks. Latency routing ensures that traffic is sent to the region with the lowest latency, while Health Checks monitor the availability of resources and enable failover to another region in case of failure. Geolocation routing and Multi-Value Answer routing do not meet the latency or failover requirements for this scenario.
- A. Correct.
This is correct. Route 53 Latency routing policy ensures that requests are routed to the region with the lowest latency for the user.
- B. Correct.
This is correct. Health Checks are necessary to monitor the availability of resources and enable automatic failover.
- C. Incorrect.
This is incorrect. Multi-Value Answer routing is used for distributing traffic to multiple healthy endpoints but does not support latency-based routing.
- D. Incorrect.
This is incorrect. Geolocation routing directs traffic based on the geographic location of the user, not the latency to the region.
- E. Correct.
This is correct. Combining Latency routing with Health Checks ensures traffic is directed to the lowest latency region and automatically fails over if the primary region becomes unavailable.