You create an Azure web app named WebApp1

HOTSPOT

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.

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Answer:

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