单项选择题
What is a valid IPv6 address?（）
A. 00:05:85:23:45:67 B. 127.0.0.1 C. 2001:0db8:3000:2215:0000:0000:aaaa:1111 D. 49.0001.0192.0168.1001.00
单项选择题 What is the decimal equivalent of 00000100?（）
单项选择题 Which command prompt indicates that you are in operational mode?（）
单项选择题 Which word starts a command to display the operational status of a Junos device?（）
