An IT firm has deployed multiple web servers in the AWS cloud for its client. All these web servers perform the same functionality & use Amazon Route 53 to route internet traffic to these servers. The client is looking for the number of healthy resources from all the web servers & should be notified when the number of healthy web servers count is below three.
Which health checks can be configured with Amazon Route 53?

Answer options:

A.Route 53 Application Recovery Controller health checks.
B.Health Check monitoring CloudWatch Alarms.
C.Health Checks monitoring endpoint.
D.Health Checks monitoring other health checks.

Correct Answer: D
The client is looking for several healthy resources from all the web servers. For this, health checks can be created to monitor other health checks which can notify when the resource count falls below a threshold value. During configuration, health checks are configured for individual resources without creating any notification. Health checks monitoring status of these health checks are configured which will notify count of healthy resource count.
Option A is incorrect as these health checks will provide insights into the application & will not be useful for the above case.
Option B is incorrect as this health check will monitor the data streams which CloudWatch alarms also monitor. These health checks will not be useful in the above case.
Option C is incorrect as these health checks will monitor individual endpoints. In the above case, the client is looking for consolidated health checks & a count of healthy resources among all the web servers. Health Check monitoring other health checks is a better option for this requirement.
For more information on health checks with Amazon Route 53, refer to the following URL,
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/health-checks-types.html