单项选择题 Whichstatementaboutvlanoperationonciscocatalystswitchesistrue？（）

单项选择题 For the network 192.0.2.0/23, which option is a valid IP address that can be assigned to a host?（）

单项选择题 The ip subnet zero command is not configured on a router. What would be the IP address of Ethernet0/0 using the first available address from the sixth subnet of the network 192.168.8.0/29? （）