单项选择题
When performing password recovery, which command should be entered at the boot prompt?（）
A.boot -s B.boot -r C.boot single D.boot recovery
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?（）
多项选择题 Which two loopback types are supported for serial interfaces on Juniper devices?（）
