Download JNTUA MCA 2014 Oct Supply 3rd Sem 9F00303 Linux Programming Question Paper

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Code: 9F00303

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MCA II Semester Supplementary Examinations September/October 2014

LINUX PROGRAMMING

(For students admitted in 2009, 2010, 2011 and 2012 only)

Time: 3 hours Max Marks: 60

Answer any FIVE questions

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All questions carry equal marks

1. (a) Explain briefly about text processing and process utilities in Linux.
   (b) Write a short note on awk command.
2. (a) Define shell. Explain how a shell variable can be defined and initialized.
   (b) Write a shell script to delete duplicate files in the directory.

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3. (a) Describe the file system structure and different file types in Linux system.
   (b) Compare hard links with soft links.
4. (a) Write a program to check the value of a volatile variable both in child and parent process and also list the differences in using fork ( ) and vfork (') system calls in the given program.
   (b) Write a short note on kill () and raise ( ) functions.
5. (a) What is a signal? Discuss the signals SIGKILL and SIGSTOP.
   

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   (b) What is the difference between reliable and unreliable signals? Explain with suitable examples.
6. (a) Explain the advantages of FIFOs over pipes.
   (b) Write a C program to illustrate two-way communication using FIFOs.
7. (a) What is meant by synchronization? How synchronization is achieved with semaphores?
   (b) Explain various multithreading models with suitable examples.

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8. Explain briefly about the following socket API with syntax:
   (a) socket.
   (b) connect ().
   (c) accept ().
   (d) send ().

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