Your network contains an Active Directory forest.  
You set the Windows PowerShell execution policy to allow unsigned scripts on a domain  
controller in the network. You create a Windows PowerShell script named new-users.ps1 that  contains the following lines：    
new-aduser user1  new-aduser user2  new-aduser user3  new-aduser user4  new-aduser user5    
On the domain controller， you double-click the script and the script runs. You discover that the  script fails to create the user accounts.    
You need to ensure that the script creates the user accounts.    
Which cmdlet should you add to the script（）

Your network contains two servers named Server1 and Server2 that run Windows Server 2008  R2. Server1 has Active Directory Federation Services （AD FS） 2.0 installed. Server1 is a member  of an AD FS farm.    
The AD FS farm is configured to use a configuration database that is stored on a separate  Microsoft SQL Server.  
You install AD FS 2.0 on Server2.    
You need to add Server2 to the existing AD FS farm.    
What should you do（）