多项选择题 When configuring a DHCP server, which of the following can the administrator define for DHCP users?（）

单项选择题 An administrator installs a driver,reboots the DC, and logs in to configure the NIC. Once the administrator opens the NIC properties, the server bluescreens and now will no longer boot into Windows. Which of the following is the FIRST thing the administrator should do?（）

单项选择题 A full backup is performed every Sunday and incremental backups are performed daily Monday through Saturday.  How many tapes would be required to perform a full restore if a complete failure occurred on Thursday before the incremental backup？（）