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Exam ANS-C00 topic 1 question 133 discussion

Exam question from Amazon's ANS-C00
Question #: 133
Topic #: 1
[All ANS-C00 Questions]

A user is running a batch process on EBS backed EC2 instances. The batch process launches few EC2 instances to process hadoop Map reduce jobs which can run between 50-600 minutes or sometimes for even more time. The user wants a configuration that can terminate the instance only when the process is completed. How can the user configure this with CloudWatch?

  • A. Configure a job which terminates all instances after 600 minutes
  • B. It is not possible to terminate instances automatically
  • C. Set up the CloudWatch with Auto Scaling to terminate all the instances
  • D. Configure the CloudWatch action to terminate the instance when the CPU utilization falls below 5%
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Suggested Answer: D 🗳️
Amazon CloudWatch alarm watches a single metric over a time period that the user specifies and performs one or more actions based on the value of the metric relative to a given threshold over a number of time periods. The user can setup an action which terminates the instances when their CPU utilization is below a certain threshold for a certain period of time. The EC2 action can either terminate or stop the instance as part of the EC2 action.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/UsingAlarmActions.html
by Vlan at March 7, 2021, 10:02 p.m.
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sapien45
3 years, 3 months ago
I had this question at the Sysops exam ...weird to find it here.
upvoted 1 times
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ptpho
3 years, 7 months ago
D is good at logical & solution but the value 5% is nok. They d better replace 5% by 2%
upvoted 3 times
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StelSen
3 years, 8 months ago
Option-C: Correct (An Autoscaling configuration with CloudWatch Metric i.e. CPU utilization will be good) Option-D: Cloud Watch Action (https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/API_Operations.html) is different. I couldn't see any EC2 Terminate actions in it.
upvoted 2 times
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Vlan
3 years, 8 months ago
I think D
upvoted 1 times
eeghai7thioyaiR4
3 years, 8 months ago
I guess Aweful solution, tho
upvoted 3 times
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