多项选择题 You have a class B network with a 255.255.255.0 mask. Which of the statements below are true of this network?（）

单项选择题 The 201.145.32.0 network is subnetted using a /26 mask. How many networks and IP hosts per network exists using this subnet mask?（）

单项选择题 The 213.115.77.0 network was subnetted using a /28 subnet mask. How many usable subnets and host addresses per subnet were created as a result of this?（）