One of the main differences between amplifiers and repeaters is that
A) amplifiers forward noise as well as data.
B) amplifiers clean the signal and then forward it.
C) amplifiers increase the amount of attenuation.
D) amplifiers focus primarily on digital signals.
E) amplifiers focus primarily on analog signals.
Correct Answer:
Verified
Q2: In modern communication systems,data is sent from
Q3: An encoding scheme is used
A)in digital transmission
Q4: Asynchronous transmission includes a start and stop
Q5: Analog encoding of digital information modulates a
Q6: Standards are important when devices must communicate
Q11: It is difficult to use low frequencies
Q11: A carrier wave is modulated with 4
Q12: Synchronous serial transmissions are frame based,require the
Q12: For amplitude,frequency or phase shift keying,that respective
Q17: Except for digital cellular telephones,copper wire is
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