Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 4th Sem (Fourth Semester) Regulation-R15 2020 November 824AB Linux Programming Previous Question Paper
S OCT 2020
R15
Code No: 824AB
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA IV Semester Examinations, October/ November - 2020
LINUX PROGRAMMING
Time: 2 Hours
Max.Marks:75
Answer any five questions
All questions carry equal marks
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1.a) Write a shell script to find the largest of 10 integers.
b)
Explain various process utilities in Linux with clear syntax.
[15]
2.a)
Write about the following UNIX commands with example.
Cal, date, echo, printf, bc, script, mailx, who, tty, sty.
b)
How to declare and implement associative arrays? Give an example.
[15]
3.a) Describe usage of dup ( ), dup2 ( ) system calls with example.
used
b) Explain about symlink ( ) function with example program.
[15]
4.
Write the syntax of the following system calls and explain with an example code.
a) telldir ( )
b) mkdir ( )
[15]
5.a)
Differentiate between fork( ) and vfork( ).
b)
What is the need of exec( ) system call? Write a C program to illustrate exec ( ). [15]
6.a) Define Signals. What do you mean by Unreliable Signals? Explain.
b) Describe SIGKILL and SIGINT with examples.
[15]
7.
Write a program and explain how to transfer a large amount of data between two
processes using Message queues.
[15]
8.
Explain briefly about the following socket APIs with clear syntax:
a) accept( )
b) connect( ) c) bind ( )
[15]
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This post was last modified on 17 March 2023