单项选择题
A.standby logic-channel logic-channel-number [priority]
B.standby nterface interface-type interface-number
C.logic-channel logic-channel-number
D.dialer map protocol next-hop-address dialer-string[logic-channel logic-channel-number]
多项选择题 Which two statements best describe the wireless security standard that is defined by WPA (Choose two.)（）。
单项选择题 What must be set correctly when configuring a serial interface so that higher-level protocols calculate the best route?（）
单项选择题 When configuring a serial interface on a router, what is the default encapsulation?（）