Practice Test 1 | Google Cloud Certified Associate Cloud Engineer | Dumps | Mock Test
You work for a retail company that has a busy online store. As you are approaching New Year, you find that your e-store is getting more and more traffic. You ensure that your web servers are behind a managed instance group. However, you notice that the web tier is frequently scaling, sometimes multiple times in an hour. You need to prevent the instance group from scaling up and down so rapidly. Which of the following options would help you to achieve this?
A. Change the auto scaling metric to use multiple metrics instead of just one metric.
B. Reduce the number of maximum instance count.
C. Associate a health check with instance group.
D. Increase the cool down period.
Explanation:
Correct Answer – D
D is correct: Increasing the cool down period will make scaling policy to wait to slightly longer period before taking next action of either scale up or down.
A is incorrect: This will not be beneficial in anything except creating a complex scaling policy.
B is incorrect: Just reducing the VM count will stop scaling policy to launch VMs more than threshold and won’t help us control rapid scaling up and down behaviour.
C is incorrect: Health check only provides information whether instance is responding or not.
Reference:
https://cloud.google.com/compute/docs/autoscaler/#cool_down_period
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