ANS-C01 Question 412
Select 2Your organization hosts a multi-region web application. You want to use Amazon Route 53 to direct users to the region with the lowest latency while ensuring high availability. You also need to distribute traffic between two servers in each region to balance the load. Which of the following configurations in Route 53 would meet these requirements?
- A
Create latency-based routing policies for each region and configure Route 53 health checks for the servers.
- B
Configure weighted routing policies for the servers in each region and associate health checks with each record.
- C
Use a geolocation routing policy to direct traffic to the nearest region based on user location.
- D
Create a failover routing policy to switch traffic between regions when one region becomes unavailable.
- E
Enable multi-value answer routing to distribute traffic between the servers in each region.
Show answer and explanation
Correct answers: A, B
Explanation
To achieve both low-latency routing and high availability, you need to use latency-based routing policies for directing traffic to the closest region and weighted routing policies for balancing traffic within each region. Health checks ensure requests are routed only to healthy servers, further enhancing availability. Combining these configurations meets the requirements of the scenario.
- A. Correct.
Correct: Latency-based routing ensures that users are directed to the region with the lowest latency. Health checks allow Route 53 to verify the availability of each server, ensuring high availability.
- B. Correct.
Correct: Weighted routing policies can distribute traffic between servers within a region. Associating health checks with each record ensures traffic is only sent to healthy servers.
- C. Incorrect.
Incorrect: Geolocation routing directs traffic based on the user's physical location, not latency, which does not meet the requirement for latency-based routing.
- D. Incorrect.
Incorrect: Failover routing is used for disaster recovery scenarios where traffic is routed to a backup region only when the primary region is unavailable, but it doesn't balance traffic or account for latency.
- E. Incorrect.
Incorrect: Multi-value answer routing is used to return multiple IP addresses to clients and works for simple load balancing but does not provide latency-based routing or health check integration for high availability.