Computer Networking
When setting up Frame Relay for point-to-point subinterfaces, which of the following must not be configured?

An IP address on the physical interface
PAP
The subinterface type as point-to-point
The local DLCI on each subinterface
The Frame Relay encapsulation on the physical interface

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

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

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