Download JNTUH MCA 3rd Sem R13 2018 January 813AM Linux Programming Question Paper

Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 3rd Sem (Third Semester) Regulation-R13 2018 January 813AM Linux Programming Previous Question Paper

R13

Code No: 813AM

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, January - 2018

LINUX PROGRAMMING



Time: 3 Hours















Max. Marks: 60

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

Part A is compulsory which carries 20 marks. Answer all questions in Part A. Part B
consists of 5 Units. Answer any one full question from each unit. Each question carries 8
marks and may have a, b, c as sub questions.



PART - A



















5 ? 4 Marks = 20

1.a)

What are filters? List out various filters available in linux.





[4]

b)

Distinguish between dup() and dup2() system calls.







[4]

c)

Explain the sleep() function with syntax.











[4]



d)

Explain briefly about file locking with semaphores.







[4]



e)

Explain the necessity of socket address structures.







[4]





PART - B

















5 ? 8 Marks = 40

2.a)

Explain associative arrays.

b)

Write a shell script to find the factorial of a number.







[4+4]

OR

3.a)

Explain various patterns and actions in awk.

b)

Write an awk script to perform simple arithmetic operations.





[4+4]


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.











[4+4]

OR

5.a)

Explain the following system calls:

i) open( ) ii) seek( ) iii) read( ) iv) link( ).
b)

Explain directory handling system calls.











[4+4]





6.a)

Differentiate between fork( ) and vfork( ).

b)

Write the syntax of six versions of exec functions and also explain how these
functions differ from each other?













[4+4]

OR

7.

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

a) kill

b) raise

c) alarm

d) pause

e) abort



[8]













8.

Explain the following concepts about pipes:

a) Pipes between two process
b) Pipes among three process in a shell.

[4+4]

OR

9.a)

Define unnamed pipe? How do we create unnamed pipe? Explain the limitations of
unnamed pipe.

b)

Write a program to accept the two integer numbers accepted by child, add them and result
should be passed to parent. Parent process should print result on the screen using pipes.






















[4+4]

10.a) Explain briefly about the following socket APIs with clear syntax:
i) socket( )

ii) bind( )

iii) listen( ) iv) accept( ) v)connect( )



b) Compare various IPC mechanisms.











[4+4]

OR

11.a) Compare the IPC functionality provided by message queues with shared memory.
b) Explain how to handle multiple simultaneous clients.







[4+4]





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