单项选择题
You are the top of the hierarchy in configuration mode. How would you save your configuration to a file on the router?（）
A.save configuration <filename> B.save config <filename> C.save <filename> D.save run <filename>
单项选择题 What information does the help topic command provide?（）
单项选择题 The auto-complete feature in the JUNOS CLI is triggered by which method?（）
单项选择题 In which mode are users allowed to configure the device, including interfaces, protocols, user access, and system hardware properties?（）
