单项选择题
What is the operating system do Juniper Networks MX Series routers use?（）
A. IOS B. MX-OS C. UNIX D. Junos OS
单项选择题 What information does the help reference command provide?（）
单项选择题 You have been allocated a 192.168.100.0/22 network. How many usable host are available?（）
单项选择题 What represents the decimal equivalence of 01101110?（）
