Question Paper of "DATA COMMUNICATION NETWORKS" for M.Tech (PE) (Sem.- 1st), Subject Code: EC-503, Paper ID [ E0563 ], PTU Question Paper.

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Total No. of Questions: 08

M. Tech. (ECE) (Sem.-1^st)

DATA COMMUNICATION NETWORKS

Subject Code: EC-503

Paper ID: [E0563]

Time: 3 Hrs.                                                                 Max. Marks: 100

Instruction to Candidates:

1.     Attempt any FIVE questions out of EIGHT questions.

2.     Each question carry TWENTY marks.

1.     Explain the design issues of data link layer.

(20)

2.     (a) Discuss salient features of OSI reference model.

(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)

3.     Explain in detail:

(a)  ALOHA

(b) CSMA

(20)

4.     (a) Explain the process for computing the class of Internet protocol address.

(10)

(b) What are the different services provided to transport layer.

(10)

5.     (a) Explain IEEE standards for MAN.

(10)

(b) Explain IEEE standards for LAN.

(10)

6.     Write short notes on:

(a)  Shortest path routing.

(b) Cyclic Redundancy Check.

(c)  Error Control in Stop-and-Wait Mechanism.

(20)

7. (a) How does TDM combine multiple signals into one?

(10)

    (b) Discuss the issues involved when ATM is used in LANs.

(10)

8.     (a) Given a bandwidth of 10,000 Hz (1000 to 11,000 Hz), find the carriers and the bandwidths in each direction.  Assume there is no gap between the bands in two directions. Draw the full-duplex ASK diagram of the system.

(12)

(b) What is the difference between a physical address and a logical address?

(8)