Code No: RR311702 RR Set No. 2
III B.Tech I Semester Supplementary Examinations,June 2010
BASICS OF TELEMATICS Electronics And Telematics
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. Explain in detail about channel, subgroup modulation and group modulation and
demodulations in case of underground symmetrical submarine cables. [16]
2. Distinguish between various types of DC and AC signaling used in junction trunk lines. [16]
3. (a) What are the techniques to connect a computer directly to another terminal
without a modem? Which is more preferred and why?
(b) Explain about X . 20 and X . 21 bis interface standards? [8+8]
4. (a) Compare the Packetization delay for an ATM cell for a 1500-byte packet
(b) What is the influence of packet size on:
i. Line Scheduling
ii. Buffer hardware. [8+8]
5. What is the difference between S-ALOHA and ALOHA? What overhead does S- ALOHA incur? What are the disadvantages of R-ALOHA? [16]
6. Distinguish between the following terms: (a) Topology dissemination
(b) sequence numbers- wrapped sequence number
(c) lollipop sequence to the link state routing. [6+5+5]
7. (a) Explain the problems encountered if the NRZ (Non Return Zero) waveform is directly applied to the transmission medium? Explain the techniques to overcome them?
(b) Explain about calling mode and automatic calling units used with a modem?
[8+8]
8. How store and forward of packets influences the internet technologies? What are the problems associated with store and forward routing? [16]
? ? ? ? ?
1
Code No: RR311702 RR Set No. 4
III B.Tech I Semester Supplementary Examinations,June 2010
BASICS OF TELEMATICS Electronics And Telematics
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. What is the difference between S-ALOHA and ALOHA? What overhead does S-
ALOHA incur? What are the disadvantages of R-ALOHA? [16]
2. Distinguish between various types of DC and AC signaling used in junction trunk lines. [16]
3. (a) Compare the Packetization delay for an ATM cell for a 1500-byte packet
(b) What is the influence of packet size on:
i. Line Scheduling
ii. Buffer hardware. [8+8]
4. (a) What are the techniques to connect a computer directly to another terminal
without a modem? Which is more preferred and why?
(b) Explain about X . 20 and X . 21 bis interface standards? [8+8]
5. Explain in detail about channel, subgroup modulation and group modulation and demodulations in case of underground symmetrical submarine cables. [16]
6. How store and forward of packets influences the internet technologies? What are the problems associated with store and forward routing? [16]
7. (a) Explain the problems encountered if the NRZ (Non Return Zero) waveform is directly applied to the transmission medium? Explain the techniques to overcome them?
(b) Explain about calling mode and automatic calling units used with a modem?
[8+8]
8. Distinguish between the following terms: (a) Topology dissemination
(b) sequence numbers- wrapped sequence number
(c) lollipop sequence to the link state routing. [6+5+5]
? ? ? ? ?
2
Code No: RR311702 RR Set No. 1
III B.Tech I Semester Supplementary Examinations,June 2010
BASICS OF TELEMATICS Electronics And Telematics
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. Distinguish between the following terms:
(a) Topology dissemination
(b) sequence numbers- wrapped sequence number
(c) lollipop sequence to the link state routing. [6+5+5]
2. Distinguish between various types of DC and AC signaling used in junction trunk
lines. [16]
3. What is the difference between S-ALOHA and ALOHA? What overhead does S- ALOHA incur? What are the disadvantages of R-ALOHA? [16]
4. How store and forward of packets influences the internet technologies? What are the
problems associated with store and forward routing? [16]
5. (a) Compare the Packetization delay for an ATM cell for a 1500-byte packet
(b) What is the influence of packet size on:
i. Line Scheduling
ii. Buffer hardware. [8+8]
6. (a) Explain the problems encountered if the NRZ (Non Return Zero) waveform is directly applied to the transmission medium? Explain the techniques to overcome them?
(b) Explain about calling mode and automatic calling units used with a modem?
[8+8]
7. Explain in detail about channel, subgroup modulation and group modulation and
demodulations in case of underground symmetrical submarine cables. [16]
8. (a) What are the techniques to connect a computer directly to another terminal without a modem? Which is more preferred and why?
(b) Explain about X . 20 and X . 21 bis interface standards? [8+8]
? ? ? ? ?
3
Code No: RR311702 RR Set No. 3
III B.Tech I Semester Supplementary Examinations,June 2010
BASICS OF TELEMATICS Electronics And Telematics
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. Explain in detail about channel, subgroup modulation and group modulation and demodulations in case of underground symmetrical submarine cables. [16]
2. Distinguish between the following terms: (a) Topology dissemination
(b) sequence numbers- wrapped sequence number
(c) lollipop sequence to the link state routing. [6+5+5]
3. (a) What are the techniques to connect a computer directly to another terminal without a modem? Which is more preferred and why?
(b) Explain about X . 20 and X . 21 bis interface standards? [8+8]
4. (a) Explain the problems encountered if the NRZ (Non Return Zero) waveform is directly applied to the transmission medium? Explain the techniques to overcome them?
(b) Explain about calling mode and automatic calling units used with a modem?
[8+8]
5. Distinguish between various types of DC and AC signaling used in junction trunk lines. [16]
6. What is the difference between S-ALOHA and ALOHA? What overhead does S- ALOHA incur? What are the disadvantages of R-ALOHA? [16]
7. How store and forward of packets influences the internet technologies? What are the
problems associated with store and forward routing? [16]
8. (a) Compare the Packetization delay for an ATM cell for a 1500-byte packet
(b) What is the influence of packet size on:
i. Line Scheduling
ii. Buffer hardware. [8+8]
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