Anna University Chennai 2006 M.C.A Computer Aplications Network programming - Question Paper

NETWORK PROGRAMMING

Time: 3Hrs Max.Marks: 100
ans all ques.
PART A (10 x two = 20 Marks)



1. Differentiate exit and _exit functions.
2. Show how the current signal mask of a signal can be changed?
3. Write a program to obtain the host byte order.
4. State the purpose of SO_REUSEADDR and SO_REUSEPORT Socket choices.
5. List out the info maintained by Zombie State.
6. Show how TCP maintains queue for listening socket.
7. How TCP_NODELAY choice is used while sending small packets?
8. How, when and why a client that wants to access a site in remote server would accesses the DNS?
9. How a client running on IPV4 configured host communicate with a server in IPV6 host?
10. State few functions and uses of a raw socket.


PART B ( five x 16 = 80 Marks)


11. a) discuss the Posix Signal Handling process, which calls Signal function. (8)
b) State the conditions that generate a signal. (4)
c) Write notes on Signal Sets. (4)


12. a) i) discuss the characteristics of Process Groups and Sessions. (8)
ii) Write notes on Message Queues and Shared memory. (8)
Or

b) Write a program to generate accounting data for a parent and 3 children. Get 2 integers in parent process and its children perform addition, subtraction and multiplication respectively and all get terminated in reverse order.

13. a) discuss gethostbyname, gethostbyname2 with resolver choice and the structure
these 2 points by their return value. (16)

Or

b) Write a Concurrent server program which uses TCP and show the status of Client and Server before call to fork, after fork and after socket closing by parent and child. (16)

14. a) discuss the different TCP Socket choices in detail. (16)
Or
b) discuss the different UDP server side System Calls and getsocket , setsocket functions
in detail. (16)

15. a) Write notes on

i. Raw Socket Creation and its uses. (6)
ii. IPV6 client communicating with IPV4 server (10)
Or
a) Write a program that uses raw sockets for handling ICMP messages. (16)

Earning:   Approval pending.