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(c) Discuss:
(i) Different steps of JPEG compression standard.
(ii) The RPC design and implementation issues.
ATTEMPT ANY TWO : (10×2=20)
(a) Explain how SMTP can handle the transfer of videos and images? Also explain the advantages of IMAP 4 over POP 3 mail access protocols.
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(b) What is the difference between an active web document and a dynamic web page? Also explain the role of CGI. Compare and contrast TCP with RTP. Are both doing the same things?
(c) (i) What are the problems for full implementation of voice over IP?
(ii) Do you think we will stop using the telephone network very soon?
Printed Pages: 4
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(Following Paper ID and Roll No. to be filled in your Answer Book)
PAPER ID: 110601 Roll No.
B.Tech.
(SEM. VI) THEORY EXAMINATION 2010-11
COMPUTER NETWORKS
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Time: 3 Hours] [Total Marks: 100
NOTE: ATTEMPT ALL QUESTIONS.
1. ATTEMPT ANY FOUR : (5×4=20)
(a) Differentiate between QAM and PSK. Draw the QAM constellation diagram for the following four coordinates: (1,1), (1,-1), (-1,1) and (-1,-1). What is the baud rate of a modem with the encoding technique as in the above diagram? State two reasons for using digital modulation.
(b) What are the number of IP addresses that can be assigned to the devices connected in a class B network?
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(c) Calculate the required bandwidth for a broadband channel if the signal is intended to be transmitted with a bit transmission rate of 480 kbps.
(d) It is required to transmit data at a rate of 64 kbps over a 3 kHz telephone channel. What is the minimum SNR required to accomplish this?
(e) What do you mean by 'piggybacking'?
(f) Discuss the services offered by the transport layer protocol model.
[110601] 4 [17825]
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