【单选题】【消耗次数：1】
IP地址是由一组（）位的二进制数字组成。
①
4
②
16
③
32
④
8
参考答案：
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IP地址是Internet主机的一种数字型标识,长度为32位。由于二进制数字不容易记忆,因此常用四组三位的十进制数来表示,每组十进制数代表8位二进制数,其范围为
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