JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD MCA 2020 SCRIPTING LANGUAGES Previous Question Paper (October/ November - 2020 - R15)

Scripting languages are versatile tools used across various domains due to their ease of use, rapid development capabilities, and powerful text-processing features. Key applications include:

• System Administration: Automating routine tasks such as file management, user account creation, system monitoring, and log analysis using languages like Bash, PowerShell, or Python.
• Web Development: Enabling server-side logic and dynamic content generation. Languages like PHP, Ruby, and JavaScript (Node.js) interact with databases and handle HTTP requests.
• Data Processing and Extraction: Efficiently parsing, filtering, and transforming large datasets or log files. Perl and Python are widely used for data scraping and text manipulation.
• GUI Automation: Controlling desktop applications and automating user interactions through scripts that simulate mouse clicks and keyboard inputs.
• Software Testing: Writing test scripts to perform automated regression testing, unit testing, and continuous integration workflows.
• Rapid Prototyping: Developing functional software prototypes quickly to validate concepts before implementing them in high-performance compiled languages.
• Embedded Systems: Configuring and controlling hardware components in IoT devices and embedded environments where resource-efficient scripting is required.

The following Perl script reads a string from the user, reverses it, and compares it with the original to determine if it is a palindrome:

#!/usr/bin/perl
use strict;
use warnings;

print "Enter a string: ";
my $str = ;
chomp($str);

my $reversed = reverse($str);

if ($str eq $reversed) {
    print "The string '$str' is a palindrome.\n";
} else {
    print "The string '$str' is not a palindrome.\n";
}