ANS-C01 Question 416
Select 3Your company has a requirement to set up a highly available DNS architecture using Amazon Route 53. The goal is to ensure minimal downtime and automatic failover in case of an endpoint failure. Which of the following Route 53 configurations can you use to achieve this?
- A
Configure a Route 53 failover routing policy with health checks for primary and secondary endpoints.
- B
Use a Route 53 weighted routing policy to distribute traffic evenly across multiple endpoints.
- C
Configure Route 53 geolocation routing to route traffic based on the geographic location of users.
- D
Set up Route 53 latency routing policy with multiple endpoints in different regions.
- E
Implement Multi-Value Answer routing in Route 53 with health checks enabled for all endpoints.
Show answer and explanation
Correct answers: A, D, E
Explanation
To ensure high availability with Route 53, failover routing with health checks (option 1) allows automatic failover between primary and secondary endpoints. Latency-based routing (option 4) improves availability by directing traffic to the closest healthy endpoint with the lowest latency, especially across regions. Multi-Value Answer routing (option 5) improves reliability by returning only healthy endpoints in DNS queries. These configurations together ensure minimal downtime and improved reliability for DNS traffic.
- A. Correct.
Failover routing policy with health checks allows Route 53 to automatically shift traffic from the primary endpoint to a secondary endpoint when the primary fails, ensuring high availability.
- B. Incorrect.
Weighted routing evenly distributes traffic across endpoints but does not provide automatic failover or high availability in case of endpoint failure.
- C. Incorrect.
Geolocation routing routes traffic based on user location but does not inherently provide reliability or failover capabilities.
- D. Correct.
Latency routing policy helps direct traffic to the endpoint with the lowest latency, which can be distributed across regions. Combined with multiple endpoints, this can improve availability.
- E. Correct.
Multi-Value Answer routing with health checks ensures only healthy endpoints are returned in DNS responses, improving reliability and availability.