Download JNTUH MCA 3rd Sem R09 2018 June-July F3303 Linux Programming Question Paper

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Code No: F3303 R09

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA III Semester Examinations, June/July - 2018

LINUX PROGRAMMING

Time: 3hrs Max.Marks:60

Answer any five questions

All questions carry equal marks

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1. a) Write a shell script that determines the period for which a specified user is working on the system?
   b) Explain reliable and unreliable signals. [6+6]
2. a) Write about directory management system calls.
   b) Differentiate pipes and named pipes. [6+6]
3. a) Write about orphan process.
   

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   b) Write a C program to create a zombie process. [6+6]
4. Write a C program to create a message queue with read and write permissions to write 3 messages to it with different priority numbers. [12]
5. What are semaphores? Explain with an example:
   Write a note on POSIX thread APIs. [6+6]
6. Write about shell meta characters.
   

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   Differentiate soft links and hard links: [6+6]
7. What is socket? Explain socket system calls for connection oriented protocol. [12]
8. Write short notes on the following:
   a) Socket addresses
   b) Stream errors
   

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   c) FIFO’s. [12]

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