Question Paper: Computer Communication Networks Question Paper - Dec 17 - Electronics Engineering (Semester 7) - Mumbai University (MU)
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Computer Communication Networks - Dec 17

Electronics Engineering (Semester 7)

Total marks: 80
Total time: 3 Hours
INSTRUCTIONS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary.

Q1) Attempt any FOUR questions out of the following questions.

1(a) How many hosts per network in each class of IP address can exist? Show with example.
(5 marks) 00

1(b) The Selective repeat ARQ is the most efficient protocol, explain.
(5 marks) 00

6(c) Compare in-band signaling and out-band signaling.
(5 marks) 00

6(d) What is the difference between network layer delivery & transport layer delivery?
(5 marks) 00

1(e) Compare the peer to peer network & client-server network.
(5 marks) 00

2(a) Explain different ARQ techniques.
(10 marks) 1142

2(b) Explain various transmission media in brief.
(10 marks) 1127

3(a) Explain Berkeley API.
(10 marks) 1160

3(b) Explain CSMA/CD & its use. What part of 802 project uses CSMA/CD
(10 marks) 1135

4(a) Draw the OSI layer architecture. Explain the function of each layer and Show the path of actual & virtual communication between the layers.
(10 marks) 00

4(b) Compare the following: i) TCP & UDP ii) Router & Switch
(10 marks) 1152 1134

5(a) Draw a three-stage space division switch for N=20, n=5 & k=2 and Estimate the number of cross points required. If the above switch is to be made non-blocking, derive an expression for the condition to be satisfied, also calculate the minimum cross point required for non- blocking.
(10 marks) 1156

5(b) What is DSL technology? Explain various DSL technologies & compare them.
(10 marks) 00

6(a) With reference to HDLC protocol, explain the following:

  • i) HDLC frame format
  • ii) Data transfer modes
  • iii) Different HDLC frames
  • iv) Importance of P/F bit
  • v) Balanced & Unbalanced configurations.
(10 marks) 1142

6(b) Write a short note on:

  • i) FDDI 1138

  • ii) FTP 1161

(5 marks)

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