Download JNTUH MCA 3rd Sem R13 2018 June-July 813AM Linux Programming Question Paper

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

R13

Code No: 813AM

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, June/July - 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)

Explain command substitution.













[4]

b)

Explain the functionality of lseek() function.









[4]

c)

What is the difference between wait() and waitpid().







[4]

d)

With the help of syntax explain popen() function.







[4]

e)

Explain how to perform IPC between processes over a network.





[4]



PART - B

















5 ? 8 Marks = 40

2.a)

Explain various process utilities available in linux.

b)

Write a shell script that deletes all lines containing a specified word in one or more files
supplied as arguments to it.













[4+4]

OR

3.a)

Develop an AWK program to summarize from the list of all processes, a count of
processes run by every user (including root).

b)

Write about text processing utilities.











[4+4]



4.

Differentiate between the following terms:

a) getc( ) Vs fgetc( ) b) stat( ) Vs fsat( )
c) printf( ) Vs fprint( ) d) scanf( ) Vs fscanf( ).







[8]

OR

5.

Explain the file and record locking techniques with relevant example code snippet? [8]


6.a)

Explain the layout of a C program image in main memory.

b)

Define orphan process. Write a program to illustrate the orphan process concept. [4+4]

OR

7.

Write a c program that accepts two small numbers as arguments and then sums the two
numbers in a child process. The sum should be returned by child to the parent as its exit
status and the parent should print the sum?









[8]


8.

Describe the API provided by linux for semaphores.







[8]



OR

9.

Write a program and explain how to transfer a large amount of data between two
processes using Message queues?











[8]





10.

Describe Socket system calls used for connectionless protocol with syntax and usage.[8]

OR

11.

Explain with a program how to copy file data from server to client using shared memory?

























[8]

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