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

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 4th Sem (Fourth Semester) Regulation-R15 2019 April-May 824AB Linux Programming Previous Question Paper

R15

Code No: 824AB















JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA IV Semester Examinations, April/May - 2019

LINUX PROGRAMMING

Time: 3hrs













Max.Marks:75


Note: This question paper contains two parts A and B.

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 ? 5 Marks = 25

1.a) Explain in detail about Process Utilities.











[5]

b) Differentiate soft link and hard link with examples.







[5]

c) Compare and Contrast Reliable and Unreliable Signals.







[5]

d) Write a short note on "rclose()" library function.









[5]

e) What are Berkeley socket sand write a note on ,,socket options?



[5]



PART - B

















5 ? 10 Marks = 50

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

3. a) Write an awk script to perform simple arithmetic operations.
b) Give any 3 examples for control structures in shell programming.



[5+5]


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

5.

Describe Unix file system advantages and also state different commands used in
System calls for I/O operations.













[10]


6.

Write a detailed note on following processes:
a) Zombie processes b) Orphan processes.









[5+5]

OR

7.

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



a) kill

b) raise

c) alarm

d) pause

e) abort



[10]


8.a)

Describe the API provided by linux for semaphores.

b)

Write a program for locking a file using semaphore.







[5+5]

OR

9.

Explain the following concepts about pipes:
a) Pipes between two process

b) Pipes among three process in a shell.

[5+5]


10.

Explain the usage of Stream Sockets using Client-Server Message handling example.






















[10]

OR

11.a) Explain how to attach and detach a shared-memory segment.
b) Explain how to handle multiple simultaneous clients.







[5+5]



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