题目内容：
关于子网掩码的设置，下来说法正确的是（）。
A.对应于网络地址的所有位都设为 0
B.对应于主机地址的所有位都设为 1
C.对应于网络地址的所有位都设为 1
D.以上说法都不对
参考答案：
选择题：关于子网掩码的设置，下来说法正确的是（）。
- 题目分类：慕课
- 题目类型：选择题
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