Lovely Professional University 2010 B.Tech Computer Science and Engineering Assignment -2 Data Communication and Networking - Question Paper
Ques1. Compare the different digital to analog signals conversion mechanisms. Also explain which
technique is better?
Ques2. A periodic signal has a bandwidth of 35 Hz . The highest frequency is 75 Hz. What is the
least frequency? Draw the spectrum if the signal contains all frequency of identical amplitude.
Ques3. A non-periodic composite signal has a bandwidth of 250 kHz with the middle frequency of 175
kHz and peak amplitude of 15 volts. 2 extreme frequencies have amplitude of 0. Draw the frequency
domain of the signal with explanation.
Ques4. compute the baud rate for the provided bit rate and kind of modulation?
a) 400bps,FSK
b) 6000bps,ASK
c) 8000bps,QPSK
d) 72000bps,64QAM
Ques5. Draw the constellation diagram for the subsequent
a) ASK with peak amplitude values of two and 4
b) Binary PSK with a peak amplitude value of 3
c) QPSK with a peak amplitude value of 4
d) 8-QAM with 2 various peak amplitude values of one and 3, and four various phases
Ques6. provide the different multiplexing techniques?
Ques7. elaborate the different transmission media?
Ques8. explain in detail the concept of redundancy in fault detection and correction?
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Department of Computer Science & EngineeringLHST
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Data Communication & Networks: CSE 356 |
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Assignment 2
Class :
Date of Allotment :
Date of Submission :
Date of Test :
Ques1. Compare the various digital to analog signals conversion mechanisms. Also discuss which technique is better?
Ques2. A periodic signal has a bandwidth of 35 Hz . The highest frequency is 75 Hz. What is the lowest frequency? Draw the spectrum if the signal contains all frequency of same amplitude.
Ques3. A non-periodic composite signal has a bandwidth of 250 kHz with the middle frequency of 175 kHz and peak amplitude of 15 volts. Two extreme frequencies have amplitude of 0. Draw the frequency domain of the signal with explanation.
Ques4. Calculate the baud rate for the given bit rate and type of modulation?
a) 400bps,FSK
b) 6000bps,ASK
c) 8000bps,QPSK
d) 72000bps,64QAM
Ques5. Draw the constellation diagram for the following
a) ASK with peak amplitude values of 2 and 4
b) Binary PSK with a peak amplitude value of 3
c) QPSK with a peak amplitude value of 4
d) 8-QAM with two different peak amplitude values of 1 and 3, and 4 different phases
Ques6. Give the various multiplexing techniques?
Ques7. What are the various transmission media?
Ques8. Discuss in detail the concept of redundancy in error detection and correction?
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Instructions:
1. Students are requested not to submit incomplete and rough like assignments, which results the same as non-submission and hence not allowed to sit for the Assignment Test and therefore their assignment mark for the same will be entered ZERO.
2. The Assignment should be written strictly on A4 sheet, in which the Cover Page and Assembly Language related answers should be in printed form. However, Timing Diagram related answers should be strictly by hand written.
3. It is mandatory to write the question of every answer too.
4. Submission after the deadline is strictly rejected.
| Earning: Approval pending. |
