Computer Networking
You are working with a network that is 172.16.0.0 and would like to support 600 hosts per subnet. What subnet mask should you use?

255.255.248.0
255.255.224.0
255.255.240.0
255.255.252.0
255.255.192.0

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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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