ANS-C01 Question 42
Select 2Your company is using Amazon Route 53 to manage DNS records for a critical web application hosted on multiple AWS regions. You are tasked with configuring Route 53 to ensure traffic is routed to the closest region based on users' geographic locations. Additionally, you want to ensure the DNS records automatically fail over to a backup region if the health check for the primary region fails. Which configuration should you use?
- A
Use Route 53 Geolocation routing to direct users to the closest region and configure health checks for each region.
- B
Use Route 53 Latency-based routing to direct users to the closest region and configure health checks for each region.
- C
Use Route 53 Traffic Flow to create a policy that combines Geolocation routing with a failover configuration.
- D
Use Route 53 Weighted routing to distribute traffic evenly across regions and configure health checks for each region.
- E
Use Route 53 Failover routing to configure primary and secondary regions with health checks.
Show answer and explanation
Correct answers: A, C
Explanation
To meet the requirements of routing users to the closest region based on geographic location and ensuring automatic failover, you need a combination of Geolocation routing and a failover mechanism. Route 53 Traffic Flow allows you to combine these features into a single policy. Geolocation routing ensures users are routed based on their geographic location, and health checks coupled with failover ensure traffic is redirected to a backup region when the primary region becomes unhealthy.
- A. Correct.
Geolocation routing allows Route 53 to direct traffic based on the user's geographic location. Coupling this with health checks ensures traffic is routed to healthy endpoints. However, this alone does not provide a failover mechanism; it needs to be combined with other features.
- B. Incorrect.
Latency-based routing directs users to the region with the lowest latency rather than the closest geographic location. While health checks can be used, this does not meet the requirement of routing based on geographic location.
- C. Correct.
Route 53 Traffic Flow allows the creation of complex routing policies that can combine multiple routing types, such as Geolocation routing and Failover. This configuration satisfies both the geographic routing and failover requirements.
- D. Incorrect.
Weighted routing distributes traffic based on assigned weights and does not inherently consider geographic location or provide automatic failover.
- E. Incorrect.
Failover routing ensures traffic is redirected to a secondary region if the primary region fails, but it does not route users based on geographic location.