Computer Networking
Communication network is

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

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

the method of determining which device has access to the transmission medium at any time.
None of these
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

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