You need to modify fabVM to be deployed into Subnet-3

DRAG DROP
You have an Azure Virtual Network named fabVNet with three subnets named Subnet-1, Subnet-2 and Subnet-
3. You have a virtual machine (VM) named fabVM running in the fabProd service.
You need to modify fabVM to be deployed into Subnet-3. You want to achieve this goal by using the least
amount of time and while causing the least amount of disruption to the existing deployment.
What should you do? To answer, drag the appropriate Power Shell cmdlet to the correct location in the Power
Shell command. Each cmdlet may be used once, more than once, or not at all. You may need to drag the split
bar between panes or scroll to view content.
Select and Place:

Answer:

Explanation:
Example
This example changes the size of the virtual machine “MyVM3”, running in “MySvc1”, to “Medium”.
Windows PowerShell
C:\\PS>Get-AzureVM -ServiceName “MySvc1” -Name “MyVM3” `| Set-AzureVMSize –InstanceSize “Medium” `|
Update-AzureVM

http://msdn.microsoft.com/en-us/library/dn495230.aspx