多项选择题
What are three physical interface properties?（）
A. payload scrambling B. virtual circuit identifier C. FCS D. link speed E. IP address
多项选择题 Which two commands allow you to return to a previous verision of software on the device?（）
单项选择题 Which statement is true regarding the Junos OS?（）
单项选择题 What must be configured prior to the first commit after factory defaults are loaded?（）
