单项选择题 In a Windows Server 2003 environment using PKI, a user encrypts several documents on a shared file server. That user account is then accidentally deleted. Which of the following must be configured in order to decrypt those files?（）

多项选择题 Wheninstallingprocessorswithmixedsteppinglevelsinaserver，whichofthefollowingguidelines mustbefollowed？（）

单项选择题 An administrator is adding additional memory into a server that registers 1GB of memory in the OS and notices that the system has 2GB of memory physically installed; however, the server only shows 1GB of memory during POST. Which of the following is the MOST likely reason for this?（）