Shivaji University 2009-4th Sem B.E Computer Science and Engineering S.E.(Computer sci& engg.) , COMPUTER NETWORKS-II - Question Paper

S.E. (Computer Sci. & Engg.) (Semester-IV) Examination, 2009
Computer Networks - II

Instructions: 1)Solve any two ques. from every part.
2)Figures to the right indicate full marks


part - I

1. a) What is "count to infinity" issue in distance vector routing algorithm?Explain with subnet diagram.[Marks 7]
b) obtain the range of addresses in the subsequent blocks[Marks 6]
i)200.17.21.128/27
ii)123.56.77.32/29

2. a) What is flooding?Explain advantages and disadvantages of flooding.[Marks 6]
b) What is congestion?Explain open loop congestion control policies(Any four).[Marks 6]

3. a) What is traffic shaping?Explain working of Leaky Bucket algorithm. [Marks 4]
b) In a block of address,we know that the IP address of host is 182.44.82.16/26.Calculate first
address and last address of block.[Marks 4]
c) discuss differentiated services quality of service model.[Marks 4]

part - II

4. a) Draw and discuss state diagram for client connection management scheme in transport layer.[Marks 6]
b) discuss cryptographic principles.[Marks 4]
c) discuss timer management in TCP.[Marks 3]

5. a) Draw and discuss TCP header format.[Marks 6]
b) What is HTTP?Explain HTTP methods(Any 3).[Marks 6]

6. a)What is Domain Name System?Explain how DNS Name Space organized in the internet.[Marks 4]
b) What is cryptography?Explain substitution cipher with example.[Marks 4]
c) discuss connection release mechanism in TCP with necessary diagram.[Marks 4]

Earning:   Approval pending.