AZ-305 Question 209

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Automatic VM placement needs to be enabled. The availability setting of your host group should match your scale set. A regional host group (created without specifying an availability zone) should be used for regional scale sets. The host group and the scale set must be using the same availability zone. The fault domain count for the host group level should match the fault domain count for your scale set. The Azure portal lets you specify max spreading for your scale set, which sets the fault domain count of 1. Dedicated hosts should be created first, with sufficient capacity, and the same settings for scale set zones and fault domains. The supported VM sizes for your dedicated hosts should match the one used for your scale set.