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Exam AWS Certified Solutions Architect - Professional topic 1 question 111 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 111
Topic #: 1
[All AWS Certified Solutions Architect - Professional 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. Configure the CloudWatch action to terminate the instance when the CPU utilization falls below 5%
  • D. Set up the CloudWatch with Auto Scaling to terminate all the instances
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
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 CloudFloater at Jan. 20, 2020, 1:15 a.m.
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CloudFloater
Highly Voted 3 years, 7 months ago
C http://jayendrapatil.com/category/aws/ec2/
upvoted 9 times
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newme
Highly Voted 3 years, 6 months ago
Why is 5% the judge point?
upvoted 5 times
01037
3 years, 6 months ago
Agreed. Though C is the only possible answer.
upvoted 1 times
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amministrazione
Most Recent 8 months, 3 weeks ago
C. Configure the CloudWatch action to terminate the instance when the CPU utilization falls below 5%
upvoted 1 times
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CloudHandsOn
2 years, 1 month ago
D. I believe that this option trumps C. We cannot be sure that because CPU utilization is under %5, that the job is complete. With autoscaling, you can set instances to terminate if CPU utilization is %0, which is more accurate.
upvoted 2 times
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Anhdd
2 years, 11 months ago
Selected Answer: C
C for me
upvoted 1 times
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user0001
2 years, 11 months ago
I think it is D , since this job a MapReduce there is no guarantee some nodes my be below 5% ,you should consider them as group
upvoted 5 times
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Ni_yot
3 years, 4 months ago
C for sure
upvoted 1 times
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cldy
3 years, 4 months ago
C. Configure the CloudWatch action to terminate the instance when the CPU utilization falls below 5%
upvoted 1 times
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challenger1
3 years, 4 months ago
My Answer: C A doesn't make sense because the Patch Process may take "Even Longer" than 600 minutes
upvoted 1 times
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acloudguru
3 years, 5 months ago
such simple question, hope I can have it inmyexam
upvoted 1 times
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jcb871
3 years, 5 months ago
Why not D?
upvoted 5 times
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kuroro
3 years, 6 months ago
Why not A? Why C?
upvoted 1 times
jcb871
3 years, 5 months ago
"Even longer" in the question
upvoted 1 times
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miracle
3 years, 6 months ago
Simple answer. C.
upvoted 1 times
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