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

Two VLANs are configured by default on all Cisco switches.
You should not have more than 10 switches in the same VTP domain.
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.

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Computer Networking
What is route poisoning?

It describes when a router sets the metric for a downed link to infinity.
It prevents regular update messages from reinstating a route that has just come up.
It sends back the protocol received from a router as a poison pill, which stops the regular updates.
It is information received from a router that can't be sent back to the originating router.

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