You need to publish metrics from several devices onto Cloudwatch. There is a requirement to publish the metrics at an interval of 1 second. How can you accomplish this? Choose 2 answers from the options given below.

Answer options:

A.Use the AWS CLI to publish custom metrics.
B.Publish custom metrics from the AWS Console.
C.Publish metrics with standard resolution.
D.Publish metrics with high resolution.

Correct Answers: A and D
This is given in the AWS Documentation.
Metrics produced by AWS services are standard resolution by default. When you publish a custom metric, you can define it as either standard resolution or high resolution. When you publish a high-resolution metric, CloudWatch stores it with a resolution of 1 second. You can read and retrieve it with a period of 1 second, 5 seconds, 10 seconds, 30 seconds, or any multiple of 60 seconds.
Option B is incorrect since you cannot publish custom metrics from the Console.
Option C is incorrect since you need high resolution for 1 second based metrics.
For more information on publishing custom metrics, please refer to the below URL-
https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/publishingMetrics.htm