Computer Networking
CSMA (Carrier Sense Multiple Access) is

None of these
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
a method access control technique for multiple-access transmission media.
a very common bit-oriented data link protocol issued by ISO.

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Computer Networking
Baseband is

the simultaneous transmission of data to a number of stations
None of these
a signal all of whose energy is contained within a finite frequency range
All of these
transmission of signals without modulation

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