Download DU (University of Delhi) B-Tech 6th Semester 7092 Network Programming Question Paper

Sl. No. of Ques. Paper : 7092

Unique Paper Code : 2341603

Name of Paper : Network Programming

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Name of Course : B.Tech. (Computer Science) (Erstwhile FYUP)

Semester : VI

Duration : 3 hours

Maximum Marks : 75

Attempt all questions from Section A and any four questions from Section B.

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Section-A

(All Questions are compulsory)

1. 1. Differentiate between concurrent and iterative server? Describe the connection establishment in concurrent server with the help of an example. [5]
   2. What do you understand by zombies? How are they handled using a signal handler? [1+4]
   3. What are the conditions under which the socket is ready for: [2.5+2.5]
      1. Reading
      2. Writing

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   4. Write the output of the following commands: [5]
      1. netstat -i
      2. netstat -r
      3. netstat -rn
      4. netstat -a

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      5. ping
   5. What is TIME_WAIT state? Explain the reasons for having this state? [1+4]
   6. What is the limitation of close() function call? How do we overcome it? [3+2]
   7. What is backlog parameter? In which function it is used? Explain its working using a diagram. [1+1+3]

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Section -B

(Attempt any four questions from section B)

2. Implement TCP echo client and TCP concurrent echo server. After connecting, server prints the IP address and port no. of the client. [10]
3. 1. What is big-endian and little -endian byte ordering? Give the representation of 0x1020 in Big Endian and Little Endian format? [3+2]
   2. What is Nagle's algorithm? Briefly explain. [5]

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4. Write short notes on: [2.5 X 4]
   1. traceroute
   2. SNMP
   3. packet sniffers
   4. DoS attacks

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5. 1. What are Resource Records? Discuss different types of Resource Records(RR) available in DNS? [1+4]
   2. Explain the communication between an IPV4 Server and IPV6 client? [5]
6. 1. What is Connected UDP socket? How is it different from unconnected UDP socket? [5]

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   2. Differentiate between inet_aton() and inet_addr() functions? [5]
7. 1. Explain TCP's window scale and MSS options? [5]
   2. What are the return values for connect() function? Explain the various possible error returns. [2+3]

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