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Question 371 - AZ-104 discussion

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You create an Azure web app named WebApp1. WebApp1 has the autoscale settings shown in the following exhibit.

The scale out and scale in rules are configured to have a duration of 10 minutes and a cool down time of five minutes.

Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.

NOTE: Each correct selection is worth one point.


Question 371
Correct answer: Question 371

Explanation:

Box 1: one instance

Refer to scaling condition provided in the question, August 8, 2018 is outside the schedule of the scale condition 1, and Default instance count is 1.

Box 2: two instances

The default instance count is important because autoscale scales your service to that count when metrics are not available. Therefore, select a default instance count that's safe for your workloads.

The Default instance count of scale condition 1 is 4, and the Scale in rule decreases the count with 1.

So initial instance count before scale in condition met = 4

CPU utilization was at 15% for 60 mins so after first 10 mins ( The scale out and scale in rules are configured to have a duration of 10 minutes )instance count reduces by 1 hence after first 10 mins instance count is 4-1=3

Now cool down period is 5 mins , after first 15 mins instance count is 3 .

After next 15 mins , instance count will be 3-1=2.

After next 15 mins , instance count will be =2 because minimum instance count must be 2 , it can't get reduced beyond 2.

So after 60 mins instance count will be at 2.

Reference:

https://docs.microsoft.com/en-us/azure/azure-monitor/platform/autoscale-best-practices

asked 26/09/2024
Deepak PSK
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