单项选择题
When a non-root user connects to a JUNOS platform and enters a username and password, the user is immediately placed at which level?（）
A.UNIX shell B.user level CLI C.configuration mode D.operational mode
单项选择题 Which statement is true about the internal link between the Routing Engine and the Packet-Forwarding Engine?（）
单项选择题 If the PFE does not have a route to the destination address of a packet, which action will be taken?（）
多项选择题 For which two functions is the Routing Engine responsible?（）
