Computer Networking
Cisco's Unified Wireless Solution provides a mesh solution. What devices do you absolutely need to purchase to run a Cisco solution?1. WCS2. Controller3. Access point4. Bridge

1 and 2
4 only
1 and 4 only
2 and 3

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Computer Networking
You save the configuration on a router with the copy running-config startup-config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be?

You didn
The newly upgraded IOS is not compatible with the hardware of the router.
NVRAM is corrupted.
The configuration register setting is incorrect.

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Computer Networking
What is split horizon?

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

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