Download JNTUH MCA 4th Sem R15 2019 April-May 824AB Linux Programming Question Paper

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Code No: 824AB

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA IV Semester Examinations, April/May - 2019

LINUX PROGRAMMING

Time: 3hrs Max.Marks:75

Note:

This question paper contains two parts A and B.

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Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.

PART - A

5 x 5 Marks =25

1. a) Explain in detail about Process Utilities. [5]
2. b) Differentiate soft link and hard link with examples. [5]

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3. c) Compare and Contrast Reliable and Unreliable Signals. [5]
4. d) Write a short note on “rclose()” library function. [5]
5. e) What are Berkeley sockets and write a note on ‘socket options’? [5]

PART -B

5 x 10 Marks =50

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1. 2.a) Write a shell script to print the details of the user login information.

   b) Explain various patterns and actions in awk. [5+5]

   OR

2. 3.a) Write an awk script to perform simple arithmetic operations.

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   b) Give any 3 examples for control structures in shell programming. [5+5]

3. 4.a) Explain the support given by kernel for files in detail.

   b) What do you mean by a hole in a file? How does the use of lseek() result in hole in a file? Explain with an example program. [5+5]

   OR

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4. 5. Describe Unix file system ‘advantages and also state different commands used in System calls for I/O operations. [10]

5. 6. Write a detailed note on following processes:

   a) Zombie processes b) Orphan processes. [5+5]

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   OR

6. 7. Explain the below system calls with the help of syntax and examples:

   a) kill b) raise c) alarm d) pause e) abort [10]

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7. 8.a) Describe the API provided by linux for semaphores.

   b) Write a program for locking a file using semaphore. [5+5]

   OR

8. 9. Explain the following concepts about pipes:

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   a) Pipes between two process b) Pipes among three process in a shell. [5+5]

9. 10. Explain the usage of Stream Sockets using Client-Server Message handling example. [10]

   OR

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10. 11.a) Explain how to attach and detach a shared-memory segment.

    b) Explain how to handle multiple simultaneous clients. [5+3]

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