题目内容
One of the most dramatic changes in connectivity and communications in the past few years has been _______.
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In a communication system, which among the following originate and accept messages in the form of data, information, and/or instructions?
In a communication system, which among the following convert messages into packets that can travel across the communication channel?
Which physical connection is the fastest?
Which among the following is considered a line-of-sight communication medium?
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