单项选择题
Which CLI command is used to upgrade a Juniper router?（）
A.load package B.load override terminal C.request system software add D.request system software upgrade
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?（）
单项选择题 When a local loopback is activated on a PPP serial link, what indicates that the local interface is good?（）
