Hotspot Question
Your network contains an Active Directory forest. The forest contains one domain named
contoso.com. The domain contains two domain controllers named DC1 and DC2. DC1 holds all of
the operations master roles. During normal network operations, you run the following commands
on DC2:
Move-ADDirectoryServerOperationMasterRole-Identity “DC2” –
OperationMasterRolePDCEmulator MoveADDirectoryServerOperationMasterRole-Identity “DC2” –
OperationMasterRoleRIDMaster DC1 fails.
You remove DC1 from the network, and then you run the following command:
Move-ADDirectoryServerOperationMasterRole -Identity “DC2” –
OperationMasterRoleSchemaMaster
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
Answer: 
Schema was not transfered (seized actually) because -Force switch is missing.
The cmdlet to transfer or seize is the same (Move-ADDirectoryServerOperationMasterRole), the only difference is that you use -Force parameter to seize (vs no parameter to transfer).
http://powershell-guru.com/powershell-tip-68-transfering-or-seizing-fsmo-roles/
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For adding new domains to the forest you need Domain Naming Master FSMO role online, which was not transfered/seized as well.