Uni-polar RZ format - Waveform values

Q.  In a uni-polar RZ format,
- Published on 04 Nov 15

a. The waveform has zero value for symbol '0'
b. The waveform has A volts for symbol '1'
c. The waveform has positive and negative values for '1' and '0' symbol respectively
d. Both a and b are correct

ANSWER: Both a and b are correct

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