Computer Networking
What is split horizon?

It splits the traffic when you have a large bus (horizon) physical network.
Information about a route should not be sent back in the direction from which the original update came.
It prevents regular update messages from reinstating a route that has gone down.
It holds the regular updates from broadcasting to a downed link.

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Computer Networking
You type the following command into the router and receive the following output:Router#show serial 0/0 ^% Invalid input detected at '^' marker.Why was this error message displayed?

You cannot have a space between serial and 0/0.
The router does not have a serial0/0 interface.
You need to be in privileged mode.
Part of the command is missing.

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Computer Networking
What does a VLAN do?

Provides multiple broadcast domains within a single collision domain.
Provides multiple collision domains on one switch port.
Breaks up broadcast domains in a layer 2 switch internetwork.
Acts as the fastest port to all servers.

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