Your network contains an Active Directory domain named contoso.com. You create a user account named User1. The properties of User1 are shown in the exhibit.
You plan to use the User1 account as a service account. The service will forward authentication requests to other servers. You need to ensure that you can view the
Delegation tab from the properties of the User1 account. What should you do first?
A.
Modify the Security settings of User1.
B.
Modify the user principal name (UPN) of User1.
C.
Configure a Service Principal Name (SPN) for User1.
D.
Configure the Name Mappings of User1.
C. Configure a Service Principal Name (SPN) for User1.
Delegation tab in ADUC not available until a SPN is set
http://blogs.msdn.com/b/mattlind/archive/2010/01/14/delegation-tab-in-aduc-not-available-until-a-spn-is-set.aspx