In simplex communications, data always travels in the same direction.
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Q19: The data efficiency of a system is
Q20: In a synchronous communications system, the receiving
Q21: "Return to zero"and "return to one"are types
Q22: Manchester encoding is a type of synchronous
Q23: Synchronous communication systems send data in groups
Q25: ASK stands for asynchronous serial keying.
Q26: Frequency shift keying is a type of
Q27: Bluetooth is an example of phase shift
Q28: Quadrature amplitude modulation uses a combination of
Q29: Each modulation state in a 16- QAM
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