问题
单项选择题
IP地址192.168.1.7/28的子网掩码为()
A.255.255.255.240
B.255.255.255.248
C.255.255.255.224
D.255.255.255.252
答案
参考答案:A
IP地址192.168.1.7/28的子网掩码为()
A.255.255.255.240
B.255.255.255.248
C.255.255.255.224
D.255.255.255.252
参考答案:A