Computer Networking
Which of the following is an advantage to using fiber optics data transmission?

All of these
few transmission errors
low noise level
fast data transmission rate
resistance to data theft

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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
All of these
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

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