ANS-C01 Question 417
Select 3Your company runs a global e-commerce platform. To ensure high availability and reliability for your DNS services, you are tasked to configure Amazon Route 53. You need to implement a solution that automatically routes traffic to healthy endpoints and provides failover support in case of regional outages. Which of the following Route 53 configurations can help achieve this goal?
- A
Configure Route 53 with a Failover Routing Policy.
- B
Use Geolocation Routing to direct users to the nearest endpoint.
- C
Enable Multi-Region Latency-Based Routing with health checks.
- D
Leverage Weighted Routing to distribute traffic evenly across endpoints.
- E
Implement Route 53 DNS Failover with health checks.
Show answer and explanation
Correct answers: A, C, E
Explanation
To ensure reliability and high availability with Route 53, you need to configure routing policies and health checks that support automatic failover and traffic redirection to healthy endpoints. Failover Routing, Latency-Based Routing with health checks, and DNS Failover with health checks are effective configurations for achieving this. These options ensure that Route 53 dynamically responds to endpoint health and continues to direct traffic effectively during outages or failures. Geolocation and Weighted Routing policies do not inherently provide failover or health-checking capabilities, making them unsuitable for this specific requirement.
- A. Correct.
Failover Routing Policy is specifically designed to route traffic to a secondary (failover) resource when the primary resource becomes unhealthy. This directly supports high availability.
- B. Incorrect.
While Geolocation Routing directs users to the nearest regional endpoint based on their geographic location, it does not inherently provide failover capabilities or health checks.
- C. Correct.
Latency-Based Routing with health checks ensures that traffic is routed to the region with the lowest latency, and health checks help ensure traffic is only sent to healthy endpoints. This enhances reliability and availability.
- D. Incorrect.
Weighted Routing helps distribute traffic based on assigned weights but does not provide failover capabilities or ensure traffic is routed only to healthy resources.
- E. Correct.
Route 53 DNS Failover with health checks ensures that traffic is automatically routed to healthy endpoints during failures, which is critical for high availability.