問答題Two Cisco routers are connected to each other and are enabled CDP. Serial line is up,protocol is also up but cdp neighbor not working. What layer of the OSI model does the problem most likely exist?

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3.單項選擇題

The following commands are issued on a Cisco router:

What would be the output shown on the console?()

A.All IP packets passing through the router
B.Only IP packets with the source address of 10.1.1.1
C.All IP packets from 10.1.1.1 to 172.16.1.1
D.All IP packets between 10.1.1.1 to 172.16.1.1

4.多項選擇題Which two of the following options are categories of Network Maintenance tasks?()

A.Firefighting
B.Interrupt-driven
C.Policy-based
D.Structured
E.Foundational

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