Loyola College B.Sc. Computer Science April 2011 Introduction To Data Communication Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – COMPUTER SCIENCE

FIFTH SEMESTER – APRIL 2011

CS 5506 – INTRODUCTION TO DATA COMMUNICATION

 

 

 

Date : 19-04-2011              Dept. No.                                          Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

 

ANSWER ALL THE QUESTIONS:                                                                      (10 x 2 = 20 marks)

 

  1. What are the fundamental characteristics for effectiveness of a data communication?
  2. Define multipoint network.
  3. What is meant by peer-to-peer processes?
  4. Define Frequency.
  5. What are the five broad categories of line coding schemes?
  6. Write a note on Bipolar with 8-zero substitution(B8ZS).
  7. What are the use of twisted –pair cables?
  8.  List out the advantages of Optical Fiber.
  9.  Define Channel.
  10. What is meant by burst error?

PART – B

ANSWER ALL THE QUESTIONS:                                                                      (5 x 8=40 marks )

 

 

  1. a) What is the difference between half-duplex and full duplex transmission modes?

(Or)

  1. b) List out the five components of a data communication system and Explain it.

 

  1. a) Discuss about peer-to-peer processes in OSI with necessary figure.

(Or)

  1. b) Explain the services of the session layer .

 

  1. a) Differentiate between Manchester and differential Manchester schemes.

(Or)

b)What are the functions of pins in EIA-232 DB-25?

 

  1. a) Write down the specifications of the major Bell Modems.

(Or)

  1. b) Explain the advantages and disadvantages of optical fiber.

 

  1. a) Discuss in detail about the Time-Division Multiplexing.

(Or)

  1. b) Explain the following types of redundancy checks used in data communication.
  2. a) Vertical Redundancy Check b) Longitudinal Redundancy Check

 

PART – C

 

ANSWER ANY TWO QUESTIONS                                                                     (2×20=40 marks)

 

  1. a) Explain the topologies with an example.
  2. i) Bus ii) Ring

 

  1. b) Discuss in detail about the services offered by Data link layer and Transport layer.

 

  1. a) Describe the types of polar encoding used in digital – to – digital conversion.

 

  1. b) What are the three types of digital services available to telephone customers?

 

  1. a) Explain error correction in detail.

 

  1. b) Explain the Types of Computer Networks with Examples.

 

 

 

 

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