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

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

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Computer Networking
HDLC (High-level Data Link Control) is

network access standard for connecting stations to a circuit-switched network
a very common bit-oriented data link protocol issued by ISO.
a method access control technique for multiple-access transmission media
None of these
a method of determining which device has access to the transmission medium at any time

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