Computer Networking
You are working with a network that is 172.16.0.0 and would like to have the maximum number of hosts per subnet. This assumes support for eight subnets. What subnet mask should you use?

255.255.240.0
255.255.224.0
255.255.248.0
255.255.192.0
255.255.255.0

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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 holds the regular updates from broadcasting to a downed link.
It prevents regular update messages from reinstating a route that has gone down.

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