Your network contains an Active Directory domain named contoso.com.
You log on to a domain controller by using an account named Admin1.Admin1 is a member of the Domain Admins group.
You view the properties of a group named Group1 as shown in the exhibit. (Click the Exhibit button.)

Group1 is located in an organizational unit (OU) named OU1.
You need to ensure that users from Group1 can modify the Security settings of OU1 only.
What should you do from Active Directory Users and Computers?（）

Your network contains an Active Directory domain named contoso.com. The domain contains a domain controller named Server1 that has the DNS Server server role installed.
Server1 hosts a primary zone for contoso.com.
The domain contains a member server named Server2 that is configured to use Server1 as its primary DNS server.
From Server2, you run nslookup.exe as shown in the exhibit. (Click the Exhibit button.)

You need to ensure that when you run Nslookup, the correct name of the default server is displayed.
What should you do?（）