Computer Networking
Select the cable that uses copper conductor, accept and transport signals in the form of electric current?

Fiber-optic cable
Metallic cable
Twisted pair cable
All of these

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

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

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