Mahatma Gandhi University (MGU) 2004 B.Tech Computer Science and Engineering Datacommunication - Question Paper
2004 Mahatma Gandhi University B.Tech Computer Science and Engineering Computer science 5th semester datacommunication paper november2004 ques. paper
.6 (Pages: 2) Reg. No............................ B.TECH. DEGREE EXAMINATION, OCTOBER / NOVEMBER 2004 Fifth Semester -
Branches Computer Science and Engineering; Information Technology DATA COMMUNICATION (R, T) .
(New Scheme - 2002 Admission)
Three Hours Maximum: 100 Marks
Answer all questions.
Part A
Define A.M and F.M
Explain the terms sampling and quantization in connection with PCM.
Explain how multiplexing is done using Tima Division Method.
State Shannons channel capacity theorem.
Explain briefly asynchronous transmission of digital data.
Mention different types of noises in digital data transmission.
Describe any single bit error detecting code.
Briefly describe ASCII codes.
Explain the role of Front end Processor in data communication system.
Explain the advantages of fibre optic cable over coaxial cable in data transmission.
(10 x 4 = 40 markej
PartE
(a) Derive the power relation In AM. Draw its frequency spectrum.
Or
(b) With neat block diagram, explain operation of PAM.
(a) Ejcplain the three basic forms of signaling binary information with associated wave forms.
Or
(b) Compare and contrast FDM and TDM multiplexing techniques.
(a) Explain simplex, Half duplex and Full duplex transmission inodes.
. Or
(b) Explain in detail the principles of circuit switching and packet switching. Give their merits and demerits.
(a) Explain VRC, LRC CRC and checksum error detection techniques.
Or
(b) Explain stop-and-wait and Go back-n ARQ methods of error control.
(a) Describe in detail how PPP makes a computer system connected through a telephone line.
Or
Cb) Explain G.8.M system architecture. (5 x 12 = 60 marks)
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