You need to design desktop and security settings for the client computers in the Seattle call center. Your solution must be implemented by using the minimum amount of administrative effort.Which two actions should you perform？（）

A.Disable all unnecessary services on each DHCP server
B.Modify the discretionary access control lists （DACLs） in Active Directory so that only members of the Enterprise Admins security group can authorize additional DHCP servers
C.Use an IPSec policy that allows only the packets necessary for DHCP and domain membership for each DHCP server
D.Install a digital certificate for SSL on each DHCP server

A.Configure and publish a certificate template that is suitable for S/MIME, Deploy a Group Policy object （GPO） so that a certificate that is based on this template is automatically issued to all domain users
B.Specify Group Policy objects （GPOs） and IPSec policies that require all client computers to use Kerberos authentication to connect to mail servers
C.For each mail server， acquire an SSL server certificate from a commercial CA whose root certificate is already trusted
D.Require IPSec encryption on all TCP connections that are used to send or receive e-mail messages

A.Deploy a Windows Server 2003 computer running SUS in the test network. Deploy SUS servers in each child domain to download administrator-approved updates from the test network SUS server
B.Deploy a Windows Server 2003 computer running SUS in the test network Use autoupdate policies in each child domain to download and deploy updates from the test network SUS server
C.Install MBSA on a Windows Server 2003 computer in the network network. Deploy MBSA as a Windows Installer package to all computers in the child domains， and configure MBSA to scan for updates from the server in the test network
D.Install IIS on a Windows Server 2003 computer in the test network. Create a Web site named Updates on this server. Configure an autoupdate policy in each child domain to download and deploy updates from the Updates Web site