
Explanation:
Box 1: 4
If you resize the Scale Set all the VMs get resized at once, thus 4 is the correct answer.
Box 2: 1
Automatic OS updates update 20% of the VMs at once, with a minimum of 1 VM instance at a time. Also 20% of 4 = 0.8.
Reference:
https://docs.microsoft.com/en-us/learn/modules/build-app-with-scale-sets/2-features-benefits- virtual-machine-scale-sets
https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets- automatic-upgrade
https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets- upgrade-scale-set