单项选择题
You have been assigned the 66.96.130.0/24 network and need to segment ito at least 60 subnets. Which network mask meets this requirement?（）
A. /27 B. /28 C. /29 D. /30
单项选择题 What is a route filter?（）
单项选择题 What is the default SNMP permision level on Junos devices?（）
单项选择题 Which command do you use to show active alarms?（）
