多项选择题
What are three correct steps to reset a lost root password?（）
A.Press the TAB key when prompted. B.Enter boot -p. C.Enter recovery when prompted. D.Commit the change. E.Reboot.
单项选择题 When performing password recovery, which command should be entered at the boot prompt?（）
单项选择题 Which CLI command is used to upgrade a Juniper router?（）
单项选择题 How is a loopback cleared on interface ge-0/0/0?（）
