单项选择题
A.169.255.1.0 B.169.254.1.1 C.192.168.1.0 D.192.168.1.1
802.11securityisdefinedin：（）A.802.11a.B.802.11b.C.802.1...
单项选择题802.11 security is defined in：（）
A.802.11a. B.802.11b. C.802.11g. D.802.11i.
WhichofthefollowingmethodsofuserauthenticationistheMOST...
单项选择题Which of the following methods of user authentication is the MOST secure？（）
A.CHAP B.Kerberos C.TACACS D.EAP
221.17.101.223/28isanexampleofwhichkindofnotation？（）A.A...
单项选择题221.17.101.223/28 is an example of which kind of notation？（）
A.ARP B.CIDR C.DNS D.Port Number
