Computer Networks (January – 2014) [IDOL - Old Course | Question Paper]

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B.Sc.IT: Semester – III

[Computer Networks ]

Question Paper (April – 2014) [Old Course]

Time: 3 Hours
Total Marks: 100

N.B.:    (1) Questions No. 1 is Compulsory.
            (2) Attempt any four questions from the following.
            (3) Draw neat diagram whenever required.

Q.1 Attempt The Following Question: (10 Marks)
(A) Describe OSI Reference Model with neat diagram.
(B) Explain in detail star bus topologies. What are the advantages of star topology over bus topology? Which type of Network Used Star Topology?

Q.2 Attempt Any Three From The Following: (15 Marks)
(A) What is Checksum? List the steps involved in creating a checksum.
(B) What are two types of Line Configurations?

Q.3 Attempt Any Three From The Following: (15 Marks)
(A) What is Transmission Media? Explain Coaxial Cable with diagram.
(B) Explain the difference between stop and wait and sliding window flow control protocol.

Q.4 Attempt Any Three From The Following: (15 Marks)
(A) What is TCP? Explain TCP system in detail.
(B) Write the short note on interconnecting devices such as Bridges Hubs, Switches, Routers and Gateway.

Q.5 Attempt Any Three From The Following: (15 Marks)
(A) Describe High Level Data Link Control and its operation.
(B) What is IP? Explain IPv4 datagram header in detail.

Q.6 Attempt Any Three From The Following: (15 Marks)
(A) What is Cryptography? Explain the importance of Digital Signature.
(B) What is DNS and Resource Encoding? Explain how DNS Servers work?

Q.7 Write short notes on: (20 Marks)
(A) Frame Relay
(B) Circuit and Packet Switching
(C) Distributed System examples and goals

(D) X.25 Protocol

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