多项选择题
A.15.234.118.63
B.92.11.178.93
C.134.178.18.56
D.192.168.16.87
E.201.45.116.159
F.217.63.12.192
单项选择题 如果C类子网的掩码为255.255.255.240，则包含的子网位数、子网数目、每个子网中的主机数目正确的是（）。
多项选择题 Which of the following describe the process identifier that is used to run OSPF on a router (Choose two.)（）。
多项选择题 Which of the following host addresses are members of networks that can be routed across the public Internet? （）