Digital Communication Questions and Answers
Q1.
The signal can be reconstructed
Answer :
At & above the Nyquist rate
Q2.
Source coding reduces
Answer :
Redundancy & Average bit rate
Q3.
Transmitted pulse becomes distorted due to
Answer :
Non ideal transmission characteristic
Q4.
The method using which the error propagation in dubinary signalling can be avoided is
Answer :
Precoding
Q5.
The primary advantage of this method is
Answer :
redistribution of spectral density & to favor low frequencies
Q6.
Which waveform type has the feature of clocking?
Answer :
Manchester coding
Q7.
PCM word size can be described by
Answer :
Number of quantization levels
Q8.
Which waveforms are also called as line codes?
Answer :
PCM
Q9.
Which method is preferred in magnetic tape recording?
Answer :
NRZ-M
Q10.
In which waveform logic 1 and logic 0 are represented by opposite one half bit wide pulses?
Answer :
Bipolar RZ
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