多项选择题
Which two prefixes would summarize the networks shown below?（）
A. 192.168.0.0/23 B. 192.168.0.0/22 C. 192.168.0.0/24 D. 192.168.0.0/21
单项选择题 What is the network address for the 10.13.147.100/19 host?（）
单项选择题 What is the last usable IP address in the 218.6.0.0/17 network?（）
单项选择题 What is the binary equivalent of 242.168.94.124?（）
