单选题802.11帧结构中，有几个address？（）A 2B 3C 4D 5
单选题
802.11帧结构中，有几个address？（）
A
2
B
3
C
4
D
5
参考解析
解析：
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单选题Which of the following is true about an IP address if the first bit is a zero?（）AThe address is a Class A address.BThe address is a Class B address.CThe address is a Class C address.DThe address is a Class D address.