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Wednesday, September 2, 2015

Question Paper of "DATA COMMUNICATION NETWORKS" for M.Tech (PE) (Sem.- 1st), Paper ID [ EC-503], PTU Question Paper.










ptupaper.com
Roll No…….
Total No. of Questions: 08

Examination May-2014
M.Tech.
DATA COMMUNICATION NETWORKS
EC-503

Time: 3 Hrs.                                                                 Max. Marks: 100
Note: Attempt any five questions out of eight.
Q1. Explain the Network layer design issues in detail.
(20)

Q2.
(a) What are the reasons for using layered protocols?
(7)
(b) Distinguish between data rate and baud rate. Can you give examples where baud rate is (a) higher, (b) lower than the data rate? Explain.
(13)
Q3. Explain in detail
(a) Domain Name System (DNS)
(b) File Transfer Protocol (FTP)
(20)
Q4.
(a)  Describe how layers in OSI reference model correspond to layers in the TCP/IP model.
(10)
(b) What are the different services provided to transport layer.
(10)
Q5.
(a)  How is VRC related to LRC.
(10)
(b) List the steps involved in creating a checksum.
(10)
Q6. Write short notes on:
(a)  Three Major Multiplexing Techniques
(b) How is CRC superior to LRC
(c)  Error Control in Stop-and-wait Mechanism
(20)
Q7.
(a)  How is one TDM signal separated into its original components? Consider both implementation of TDM.
(10)
(b) How is ATM used in a WAN.
(10)
Q8.
(a)  Explain the technology (switching) which helps in wireless transmission. Also, explain how it will be realised practically.
(10)
(b) Explain how connection is established and released in TCP protocol? What are the different situations that may be encountered?
(10)

















                                                   

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