Modulation (DPCM) is True ?
A:-No predictor output, but the message signal alone is quantized

B:-Two back-to-back message signal are compared and the difference is
quantized

C:-The difference of message signal with its prediction is quantized
D:-Predictor output is one-bit quantized and transmitted
Correct Answer:- Option-C

Question71:-Given, sampling frequency 30 KHz and Bandwidth 3 KHz. Which step
size will minimize slope-overload error for Delta Modulation system with a
normalized sinusoid as input ?

A:-A 2 0.20

B:-A = 9x

C:-A = 307

D:-A = 0.57

Correct Answer:- Option-A

Question72:-In the following pairs of OSI protocol layer/sub-layer and its
functionality, the INCORRECT pair is

A:-Physical layer and demodulation

B:-Transport layer and end-to-end process communication
C:-Application layer and multi-access

D:-Network layer and routing

Correct Answer:- Option-C

Question73:-In a token-ring network, the transmission bit rate is 10 Mbps at a
propagation speed on cable 200 m/US. Here, 2-bit delay is equivalent to

A:-500 m of the cable
B:-40 m of the cable
C:-20 m of the cable
D:-100 m of the cable
Correct Answer:- Option-B

Question74:-A binary PSK system has a bit rate of 1 Mbps. If the received
waveforms, +10-%cos(u,:) , are coherently detected by a matched filter, what is the
probability of error, given that the channel's one sided noise power spectral density
is 10 W/Hz ?

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Correct Answer:- Option-D