Download JNTUH MCA 4th Sem R17 2021 July-August 844AB Linux Programming Question Paper

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Code No: 844AB R17

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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Answer any five questions
All questions carry equal marks

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1. a) Explain about shell variables and shell Meta characters with suitable examples. [15]
2. a) Explain about Piping and I/O redirection operators in Bourne Shell. b) Write a shell script to display the contents of a file without using in-built utilities. [8+7]
3. a) Give the syntax for open( ) and create( ) system calls and explain. b) Describe the file descriptor and inode table entries with a neat diagram. [8+7]
4. a) Explain any two directory related system calls with neat syntax and example. b) Write about hashes and references in Perl. [8+7]
5. a) How does a fork( ) system call differs from an exec( ) system call? Explain. b) Write a program that illustrates the concept of zombie process. [8+7]

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6. a) Illustrate the concept of kill( ) and raise( ) system calls. b) Explain about the primary features of reliable functions with an illustrative example program. [7+8]
7. a) What are the security problems associated with system V IPC mechanisms? b) What are the limitations of pipes? List the benefits of FIFOs compared to pipes. [7+8]
8. Describe all the elementary socket functions required to write a complete TCP client and server application. [15]

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