AWS Certified Developer Associate Practice Test 4

Correct answer - "Use a cron job on the instances that push the EC2 RAM metric as a Custom metric" : The Amazon CloudWatch Monitoring Scripts for Amazon Elastic Compute Cloud (Amazon EC2) Linux-based instances demonstrate how to produce and consume Amazon CloudWatch custom metrics. These Perl scripts comprise a fully functional example that reports memory, swap, and disk space utilization metrics for a Linux instance. You can set a cron schedule for metrics reported to CloudWatch and report memory utilization to CloudWatch every x minutes.

"Use instance metadata ram disk-id" - This can be retrieved by the instance metadata but it is just an ID of the RAM disk specified at launch time

"Access as a standard CloudWatch metric" - AWS CloudWatch provides most of the monitoring Metrics by default but it doesn't have any metrics for memory utilization details

"Use X-Ray" - This service helps with Identifying errors and bugs

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