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Exam AWS-SysOps topic 1 question 279 discussion

Exam question from Amazon's AWS-SysOps
Question #: 279
Topic #: 1
[All AWS-SysOps Questions]

A user has two EC2 instances running in two separate regions. The user is running an internal memory management tool, which captures the data and sends it to
CloudWatch in US East, using a CLI with the same namespace and metric. Which of the below mentioned options is true with respect to the above statement?

  • A. The setup will not work as CloudWatch cannot receive data across regions
  • B. CloudWatch will receive and aggregate the data based on the namespace and metric
  • C. CloudWatch will give an error since the data will conflict due to two sources
  • D. CloudWatch will take the data of the server, which sends the data first
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
Amazon CloudWatch does not differentiate the source of a metric when receiving custom data. If the user is publishing a metric with the same namespace and dimensions from different sources, CloudWatch will treat them as a single metric. If the data is coming with the same timezone within a minute, CloudWatch will aggregate the data. It treats these as a single metric, allowing the user to get the statistics, such as minimum, maximum, average, and the sum of all across all servers.
by awscertified at March 12, 2020, 12:57 a.m.
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albert_kuo
8 months, 3 weeks ago
Selected Answer: B
AWS CloudWatch is a regional service, which means that each CloudWatch instance operates independently within its own AWS region. In the scenario described, the user has EC2 instances running in two separate regions and is sending data to CloudWatch in US East (North Virginia) region. Even though CloudWatch instances in different regions operate independently, data sent to CloudWatch using the same namespace and metric name will be aggregated by CloudWatch when retrieved from the AWS Management Console, CLI, or APIs. This means that CloudWatch will provide an overall view of the aggregated data for the specified namespace and metric, regardless of the region from which the data originated. Therefore, option B is the correct choice. CloudWatch will receive and aggregate the data based on the namespace and metric, providing a unified view of the metric across different regions.
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xxxdolorxxx
2 years, 6 months ago
B seems correct.
upvoted 1 times
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sunilpanda
2 years, 6 months ago
B cross-account-cross-region possible https://aws.amazon.com/about-aws/whats-new/2019/11/amazon-cloudwatch-launches-cross-account-cross-region-dashboards/
upvoted 1 times
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awscertified
2 years, 7 months ago
B. CloudWatch will receive and aggregate the data based on the namespace and metric
upvoted 2 times
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