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Sixth Semester B.E. Degree Examination,

Gomputer Networks

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Note: Answer wny FIVE full questions, selectimg atleast TWO qaestions from each part"

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(04 Marksi ifferent iate between connection oriented and connectionless service s. Define routing algorithrn. Explain the Betrlman - Ford algorithrn with an example. (trO Marks) A 64 - kilobyte message is to be transmitted over two hops in a network. The network limits packets to a maximum size of 2 kilob1,tes, and each packet has a 32 - bfie header. The transmission lines in the network are error free and have a speed of 50 Mbps. Each hop is 1000 km long. How long does it take to get the rnessage from source to destination? (06 Marks) D

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(08 Marks) (08 Marks)

Explain the format of IPV4 basic header. With neat diagram, explain UDP datagram. Write a note on address resolution protocol.

Explain the three - way handshake for establishing a TCP connection. Write a note on RIP protocol. Explain the border gateway protocol.

(04 Marks)

1.

(08 Marks) (04 Marks) (08 Marks)

PART _ B

Define domain narne system. Explain DNS message format. Explain in detail any two major categories of threats to network security. Write a note on network managernent system.

(08 Marks) (S8 Marks)

(04 Marks)

6 a. Explain the overview of differentiated services operation of QOS with neat diagram. b. c.

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(08 Marks)

loop control in packet switching network.

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(08 Marks) With neat diagram explain leaky bucket algorithm used for policing. Explain the FIFO and priority queue scheduling for managing traffic at packet level.

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PART _ A

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Time: 3 hrs.

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Explain mriltiprotocol Lable switching (MPLS) and its packet forrnat. Write a note on P2P connection in context with overlay networks.

(08 Marks)

(05 Marks) (06 Marks)

Define data compression. Explain overview of digital voice process in multirnedia

networking. Explain in brief SIP Write a short note on H.323 protocol.

(08 Marks) (08 Marks)

Explain types of attack in Ad-hoc networks. Explain LEACH clustering protocol in wireless sensor network. Write a note onZig-Bee technology.

(06 Marks) (08 Marks)

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(04 Marks)

{06 Marks)