Computer Networking
The data-link layer, in reference to the OSI model, specifies

None of these
the interface between the X.25 network and packet mode device
the virtual circuit interface to packet-switched service
data link procedures that provide for the exchange of data via frames that can be sent and received
All of these

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

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 broadcast domains.
The split-MAC architecture uses MAC addresses to create a forward/filter table and break up collision domains.
The split-MAC architecture uses MAC addresses on the wireless network and IP addresses on the wired network.

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