RLE, Lempel Z Flashcards
In polar RZ format for coding, symbol ‘0’ is represented by
a. Zero voltage
b. Negative voltage
c. Pulse is transmitted for half the duration
d. Both b and c are correct
Both b and c are correct
In a uni-polar RZ format,
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
Both a and b are correct
Polar coding is a technique in which
a. 1 is transmitted by a positive pulse and 0 is transmitted by negative pulse
b. 1 is transmitted by a positive pulse and 0 is transmitted by zero volts
c. Both a & b
d. None of the above
1 is transmitted by a positive pulse and 0 is transmitted by negative pulse
The format in which the positive half interval pulse is followed by a negative half interval pulse for transmission of ‘1’ is
a. Polar NRZ format
b. Bipolar NRZ format
c. Manchester format
d. None of the above
Manchester format
The maximum synchronizing capability in coding techniques is present in
a. Manchester format
b. Polar NRZ
c. Polar RZ
d. Polar quaternary NRZ
Manchester format
The advantage of using Manchester format of coding is
a. Power saving
b. Polarity sense at the receiver
c. Noise immunity
d. None of the above
Power saving
The polarities in NRZ format use
a. Complete pulse duration
b. Half duration
c. Both positive as well as negative value
d. Each pulse is used for twice the duration
Complete pulse duration
Run Length Encoding is used for
a. Reducing the repeated string of characters
b. Bit error correction
c. Correction of error in multiple bits
d. All of the above
Reducing the repeated string of characters
The prefix code is also known as
a. Instantaneous code
b. Block code
c. Convolutional code
d. Parity bit
Instantaneous code
