Computer Networking
In Cisco's Unified Wireless Solution, what is the split-MAC architecture?

The split-MAC architecture uses MAC addresses to create a forward/filter table and break up broadcast domains.
The split-MAC architecture uses MAC addresses on the wireless network and IP addresses on the wired network.
The split-MAC architecture allows the splitting of 802.11 protocol packets between the AP and the controller to allow processing by both devices.
The split-MAC architecture uses MAC addresses to create a forward/filter table and break up collision domains.

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Computer Networking
What is split horizon?

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.
It splits the traffic when you have a large bus (horizon) physical network.

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Computer Networking
Error rate is

a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and
an error-detecting code based on a summation operation performed on the bits to be checked.
the ratio of the number of data units in error to the total number of data units
None of these
a check bit appended to an array of binary digits to make the sum of all the binary digits.

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