Types of Health Checks for Monitoring using Route53

Answer - A,B and D.

The AWS documentation mentions the following.

There are 3 types of health checks available in Route53

1)Health checks that monitor an endpoint - You can configure a health check that monitors an endpoint that you specify either by IP address or by domain name.

2)Health checks that monitor CloudWatch alarms - You can create CloudWatch alarms that monitor the status of CloudWatch metrics, such as the number of throttled read events for a Amazon DynamoDB database or the number of Elastic Load Balancing hosts that are considered healthy.

3)Health checks that monitor other health checks - You can create a health check that monitors whether Amazon Route 53 considers other health checks healthy or unhealthy.

For more information on Route53 health checks, please visit the below link:

http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/health-checks-types.html

Route53 Health Checks are a mechanism for monitoring the health and availability of resources such as web servers, endpoints, or other cloud resources. The health checks monitor these resources by periodically sending requests to them and evaluating the responses. If the responses don't meet the expected criteria, Route53 can take corrective actions such as routing traffic to a healthy endpoint.

There are different types of health checks that Route53 supports, and you can choose the most appropriate one based on the type of resource you want to monitor. The three types of health checks that you can monitor using Route53 Health Checks are:

A. Health checks that monitor an endpoint: This is the most common type of health check, which is used to monitor the availability of an endpoint such as a web server or an API endpoint. You can configure Route53 to send requests to the endpoint at regular intervals and check the response status. If the endpoint is unavailable or returns an error, Route53 can take corrective actions such as routing traffic to a healthy endpoint.

B. Health checks that monitor CloudWatch alarms: This type of health check is used to monitor the health of a resource based on CloudWatch alarms. CloudWatch is a monitoring service that can track metrics and generate alarms based on the criteria you define. You can configure Route53 to monitor a CloudWatch alarm and take corrective actions if the alarm is triggered. For example, if a CloudWatch alarm indicates that the CPU utilization of an EC2 instance has exceeded a threshold, Route53 can route traffic to a healthy instance.

C. Health checks that monitor other health checks: This type of health check is used to monitor the health of other health checks. You can configure Route53 to monitor the status of other health checks and take corrective actions if any of them fail. For example, if a health check that monitors an endpoint fails, Route53 can trigger a secondary health check that monitors the same endpoint from a different location.

D. Health checks that monitor CloudWatch logs: This is not a valid answer choice as Route53 does not support monitoring health checks using CloudWatch logs.

In summary, the three types of health checks that you can monitor using Route53 Health Checks are health checks that monitor an endpoint, health checks that monitor CloudWatch alarms, and health checks that monitor other health checks.