Computer Networking
What layer of the OSI model would you assume the problem is in if you type show interface serial 1 and receive the following message? "Serial1 is down, line protocol is down."

Network layer
Data Link layer
Physical layer
None. It is a router problem.

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Computer Networking
You need to gather the IP address of a remote switch that is located in Hawaii. What can you do to find the address?

Issue the show ip arp command on the router connected to the switch.
Issue the show ip route command on the router connected to the switch.
Issue the show cdp neighbor command on the router connected to the switch.
Issue the show cdp neighbors detail command on the router connected to the switch.

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Computer Networking
You are working on a router that has established privilege levels that restrict access to certain functions. You discover that you are not able to execute the command show running-configuration. How can you view and confirm the access lists that have been applied to the Ethernet 0 interface on your router?

show interface Ethernet 0
show access-lists
show ip interface Ethernet 0
show ip access-lists

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