Computer Networking
In a PC to telephone hookup for long distance communication, modem is connected between the telephone line and

PC
synchronous port
crossover cable
None of these
asynchronous port

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Computer Networking
The physical layer, in reference to the OSI model, defines

the interface between the X.25 network and packet mode device
None of these
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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