问题:
TestKing.com is configuring the serial interface of a Cisco router to connect to the router of a new ISP. A full T1 is being used for the Internet connection. After issuing the show interface serial 0/0 command, it is observed that the interface is UP and the line protocol is DOWN.
Which of the following commands could fix this problem?()
A . Border# copy running-config startup-config
B . Border(config)# no shutdown
C . Border(config-if)# encapsulation ppp
D . Border(config-if)# no cdp enable
E . Border(config-if)# ip routing
TestKing.com is configuring the serial interface of a Cisco router to connect to the router of a new ISP. A full T1 is being used for the Internet connection. After issuing the show interface serial 0/0 command, it is observed that the interface is UP and the line protocol is DOWN.
Which of the following commands could fix this problem?()
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