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Question 548 - DOP-C01 discussion

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You have an application which consists of EC2 instances in an Auto Scaling group. Between a particular time frame every day, there is an increase in traffic to your website. Hence users are complaining of a poor response time on the application.

You have configured your Auto Scaling group to deploy one new EC2 instance when CPU utilization is greater than 60% for 2 consecutive periods of 5 minutes. What is the least cost-effective way to resolve this problem?

A.
Decrease the consecutive number of collection periods
Answers
A.
Decrease the consecutive number of collection periods
B.
Increase the minimum number of instances in the Auto Scaling group
Answers
B.
Increase the minimum number of instances in the Auto Scaling group
C.
Decrease the collection period to ten minutes
Answers
C.
Decrease the collection period to ten minutes
D.
Decrease the threshold CPU utilization percentage at which to deploy a new instance
Answers
D.
Decrease the threshold CPU utilization percentage at which to deploy a new instance
Suggested answer: B

Explanation:

If you increase the minimum number of instances, then they will be running even though the load is not high on the website. Hence you are incurring cost even though there is no need. All of the remaining options are possible options which can be used to increase the number of instances on a high load. For more information on On-demand scaling, please refer to the below link.

Reference: http://docs.aws.amazon.com/autoscaling/latest/userguide/as-scale-based-on-demand.html

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asked 16/09/2024
Carlo Hearne
44 questions
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