Computer Networking
Carrier is

the condition when two or more sections attempt to use the same channel at the same time
a continuous frequency capable of being modulated or impressed with a second signal
One or more conductors that serve as a common connection for a related group of devices
a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of these

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Computer Networking
Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

a medium access control technique for multiple access transmission media
a form of TDMA in which circuit switching is used to dynamically change the channel assignments
All of these
the method of determining which device has access to the transmission medium at any time.
None of these

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