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GIAC GSNA Exam - Topic 3 Question 86 Discussion
Topic #: 3
You work as a Network Administrator for Net Perfect Inc. The company has a TCP/IP-based network environment. The network contains Cisco switches and a Cisco router. You run the following command for a router interface:
show interface serial0
You get the following output:
Serial0 is administratively down, line protocol is down
What will be your conclusion after viewing this output?
According to the question, the output displays that the interface is administratively down. Administratively down means that the interface is
shut down. In order to up the interface, you will have to open the interface with the no shutdown command.
Answer A is incorrect. Had there been a physical problem with the interface, the output would not have displayed 'administratively
down'. Instead, the output would be as follows:
serial0 is down, line protocol is down
Answer B is incorrect. You cannot run this command on a router that is powered off.
Answer C is incorrect. Encapsulation has nothing to do with the output displayed in the question.
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