Your network contains multiple subnets.
On one of the subnets, you deploy a server named Server1 that runs Windows Server 2012 R2.
You install the DNS Server server role on Server1, and then you create a standard primary zone named contoso.com.
You need to ensure that client computers can resolve IP addresses to host names.
What should you do first?（）

Your network contains an Active Directory domain named contoso.com. The domain contains two servers named CONT1 and CONT2. Both servers run Windows Server 2012 R2.
CONT1 has a shared printer named Printer1. CONT2 connects to Printer1 on CONT1.
When you attempt to remove Printer1 from CONT2, you receive the error message shown in the exhibit. (Click the Exhibit button.)

You successfully delete the other printers installed on CONT2.
You need to identify what prevents you from deleting Printer1 on CONT2.
What should you identify?（）