找考题网-背景图
单项选择题

A.Ⅰ、Ⅱ、ⅢB.Ⅰ、Ⅱ、ⅣC.Ⅰ、Ⅲ、ⅣD.Ⅱ、Ⅲ、Ⅳ138.138.203.0 Ⅱ.138.138.205……

某校园网的地址块是138.138.192.0/20,该校园网被划分为______个C类子网,属于该校园网的子网地址是______。138.138.203.0 Ⅱ.138.138.205.0
Ⅲ.138.138.207.0 Ⅳ.138.138.213.0

A.Ⅰ、Ⅱ、Ⅲ
B.Ⅰ、Ⅱ、Ⅳ
C.Ⅰ、Ⅲ、Ⅳ
D.Ⅱ、Ⅲ、Ⅳ