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.
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