单项选择题
Which logical unit number must be configured on an interface using PPP encapsulation?（）
A.unit 0 B.unit 1 C.unit 100 D.unit 255
多项选择题 Which two are valid configurations of an interface?（）
单项选择题 The interface ge-0/2/3 is located in which flexible PIC concentrator slot?（）
多项选择题 Which two are correct when configuring an IP address for a Fast Ethernet interface?（）
