多项选择题 You are the network administrator for your company. The network consists of a single Active Directory domain. All servers run Windows Server 2003. All client computers run Windows XP Professional.You install and configure a single server to run Windows Server Update Services （WSUS）. You configure the appropriate Group Policy settings to specify separate WSUS target groups for client and server computers. You need to ensure that computers automatically assign themselves to the correct computer group.  What should you do？（）

单项选择题 You are the network administrator for your company. The network consists of a single Active Directory domain. All servers run Windows Server 2003. All client computers run Windows XP Professional. A new low-priority update， Q318138， is released and is synchronized with the Windows Server Update Services （WSUS） server on the network. You decide to approve the update without testing.  After the update is applied to client computers， users report that they can no longer run an accounting application.You need to remove the update from all client computers until you can test the update.  What should you do？（）

单项选择题 You are the network administrator for your company. The network consists of a single Active Directory domain. All servers run Windows Server 2003. All client computers run Windows XP Professional.You install Windows Server Update Services （WSUS） on a network server named Server1. When you attempt to synchronize Server1 with the Windows Update servers， you receive an error message. You open Internet Explorer and verify that you can communicate with an external Web site by using the proxy server. You need to ensure that Server1 can communicate with the Windows Update servers.  What should you do on Server1？（）