Computer Networking
You are troubleshooting a connectivity problem in your corporate network and want to isolate the problem. You suspect that a router on the route to an unreachable network is at fault. What IOS user exec command should you issue?

Router> trace
Router> ping
Router> show ip route
Router> show interface

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Computer Networking
Which one of the following is true regarding VLANs?

VLANs only work if you have a complete Cisco switched internetwork. No off-brand switches are allowed.
VTP is used to send VLAN information to switches in a configured VTP domain.
You should not have more than 10 switches in the same VTP domain.
Two VLANs are configured by default on all Cisco switches.

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