多项选择题
The network technician is planning to use the 255.255.255.224 subent mask on the network.which three valid IP addresses can the technician use for the hosts?（）
A.172.22.243.127 B.172.22.243.191 C.172.22.243.190 D.10.16.33.98 E.10.17.64.34 F.192.168.1.160
多项选择题 A network administrator needs to configure port security on a switch.which two statements are true?（）
多项选择题 Which two statements apply to dynamic access lists?（）
多项选择题 Which two of these are characteristics of the 802.1Q protocol?（）
