________ can be modulated using amplitude, frequency, or phase ...

[shofmannx20]

________ can be modulated using amplitude, frequency, or phase modulation.
 
  A) Dialog
  B) Codec
  C) Analog
  D) Modem

Question 2

________ are devices that modulate a digital signal into an analog signal on the sending end and then, at the receiving end, demodulate the signal from analog back to digital.
 
  A) Hubs
  B) Codecs
  C) Analogs
  D) Modems

[scrocafella]

Answer to Question 1

C

Answer to Question 2

D

[shofmannx20]

Thanks for the timely response, appreciate it

[ecabral0]

Excellent