单项选择题
Which line from the output of the show ip interface command indicates a layer 1 problem?（）
A. Serial0/1 is up, line protocol is down
B. Serial0/1 is down, line protocol is down
C. Serial0/1 is up, line protocol is up
D. Serial0/1 is administratively down, line protocol is down
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相关考题
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单项选择题
Which statement about IPv6 is true?（）
A. Addresses are not hierarchical and are assigned at random.
B. Only one IPv6 address can exist on a given interface.
C. There are 2.7 billion addresses available.
D. Broadcasts have been eliminated and replaced with multicasts. -
单项选择题
Which statement about RIPng is true?（）
A. RIPng allows for routes with up to 30 hops.
B. RIPng is enabled on each interface separately.
C. RIPng uses broadcasts to exchange routes.
D. There can be only one RIPng process per router. -
单项选择题
Which term describes the process of encapsulating IPv6 packets inside IPv4 packets?（）
A. tunneling
B. hashing
C. routing
D. NAT
