单项选择题
What must be configured prior to the first commit after factory defaults are loaded?（）
A.root authe ntication B.default gateway C.hostname D.management services
单项选择题 What represents the binary equivalence of 207?（）
单项选择题 Which two statements are true of a network mask?（）
单项选择题 Which user authenticaton method is supported by the Junos OS as the last resort alternative?（）
