多项选择题
Which two wireless encryption methods are based on the RC4 encryption algorithm?（）
A.WEP B.CCKM C.AES D.TKIP E.CCMP
多项选择题 Which two features did WPAv1 add to address the inherent weaknesses found in WEP?（）
多项选择题 Which three options are valid WAN connectivity methods?（）
多项选择题 If IP routing is enabled, which two commands set the gateway of last resort to the default gateway?（）
