多项选择题 Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 (SP2). All client computers run Windows XP Professional Service Pack 3 (SP3).  Computer accounts for the client computers are located in three organizational units (OUs) named OU1, OU2, and OU3. You install Windows Server Update Services (WSUS) 3.0 on a member server named Server1. On Server1, you create three WSUS computer groups named OU1, OU2, and OU3.  You need to ensure that each client computer is assigned automatically to the WSUS computer group that corresponds to the OU in which the computer account resides.  Which two actions should you perform?（）

单项选择题 Your network consists of a single Active Directory domain named Contoso.com. All servers on the network run Windows Server 2003 Service Pack 2 (SP2). All client computers on the network run Windows XP Professional Service Pack 3 (SP3). All computers run a custom application named App1. App1 requires domain authentication. App1 does not support smart card authentication. Your company implements a new security policy that states that all users must log on to their computers by using a smart card. You need to ensure that all users can use App1 while eeting the new security policy.  What should you do?（）

单项选择题 You have a single network segment. All servers run Windows Server 2003 Service Pack 2 (SP2). You have a DHCP server named Server1. Client computers receive IP addresses from Server1. You add a second network segment separated by a RFC 1542-compliant router. You need to ensure that computers in the new network segment can receive their IP configurations from Server1. You make the appropriate configuration changes on the router.  What should you do on Server1?（）