Computer Networking
Bulletin board system

is a public access message system
converts analog signals to digital signals
converts digital signals to analog signals
is a modem capable of accepting commands
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
the method of determining which device has access to the transmission medium at any time.
All of these
None of these

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