单项选择题
A. A subnet mask specifies the portion of an IP address that is in a binary format
B. A subnet mask specifies the portion of an IP address that is in a decimal format
C. A subnet mask specifies the portion of an IP address that represents a network prefix
D. A subnet mask specifies the portion of an IP address that represetns network hosts
单项选择题 Which user authenticaton method is supported by the Junos OS as the last resort alternative?（）
单项选择题 You must segement your internal 192.168.1.0/24 network into a minimun of 12 subnet, each containing a minimun of 12 hosts. Which network mask do you use?（）
单项选择题 What represents the binary equivalence of 96?（）