多项选择题 Which of the following IP addresses is a private IP address? Select all that apply.（）

多项选择题 Which of the following are true regarding a network using a subnet mask of 255.255.248.0?（）

单项选择题 You are the network administrator at TestKing. TestKing has been assigned the class C IP address 189.66.1.0 by its Internet Service Provider. If you divide the network range by using the 255.255.255.224 subnet mask, how many hosts can be supported on each network?（）