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

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

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Computer Networking
How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates?

Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.
Configure many subinterfaces in the same subnet.
Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.

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Computer Networking
Baseband is

the simultaneous transmission of data to a number of stations
All of these
None of these
a signal all of whose energy is contained within a finite frequency range
transmission of signals without modulation

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