Computer Networking
What does a switch do when a frame is received on an interface and the destination hardware address is unknown or not in the filter table?

Drops the frame
Floods the network with the frame looking for the device
Sends back a message to the originating station asking for a name resolution
Forwards the switch to the first available link

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

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the interface between the X.25 network and packet mode device
the virtual circuit interface to packet-switched service
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data link procedures that provide for the exchange of data via frames that can be sent and received

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