Answer any one question from Q1 and Q2
1 (a)
Explain the various transmission impairments in data communication.
6 M
1 (b)
List the Line Coding schemes in digital transmission. Explain Polar NRZ and Unipolar NRZ schemes.
6 M
2 (a)
Define spread spectrum. Explain FHSS and DSSS.
6 M
2 (b)
State and explain the Nyquist theorem and Shannon capacity and solve the following example:
Example: Calculate the maximum bit rate for noiseless channel with a bandwidth of 3000 Hz transmitting a signal with two signal levels.
Example: Calculate the maximum bit rate for noiseless channel with a bandwidth of 3000 Hz transmitting a signal with two signal levels.
6 M
Answer any one question from Q3 and Q4
3 (a)
What is circuit switching? Explain circuit switching in detail with its advantages and disadvantages.
6 M
3 (b)
Explain TCP/IP protocol suite.
7 M
4 (a)
Explain ISO/OSI model in detail.
8 M
4 (b)
Write a short note on Fibre optic cable.
5 M
Answer any one question from Q5 and Q6
5 (a)
What is Hamming distance ? Explain it with an example. Explain simple parity check code.
7 M
5 (b)
Explain Error Detection and Correction in Block Coding.
6 M
6 (a)
What is CRC ? Explain CRC generator and CRC checker with suitable example.
6 M
6 (b)
What is Checksum? Describe in detail internet Checksum method with suitable example.
7 M
Answer any one question from Q7 and Q8
7 (a)
Explain FDMA, TDMA and CDMA in detail.
6 M
7 (b)
What is HDLC ? Explain with the help of its frame format. Describe all fields in detail.
6 M
8 (a)
Explain CSMA and CSMA/CD in detail.
6 M
8 (b)
Differentiate : 10Base2, 10Base5 and 10BaseT specification.
6 M
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