In relation to use strict; in Perl, a variable must be declared with which of the following keywords in order to use it for the first time?

Which Perl debugging commands is used for displaying all the loaded modules and their versions?

Which command is used to confirm the installation of Perl on the Windows operating system?

In Perl, which is a non-whitespace character?

In Perl, which is the correct syntax for declaring a subroutine with attributes and prototypes?

In relation to perltie, which method is triggered each time the tied variable is accessed?

What's is DBI and DBD?

How would you remove an element from hash?

Which function is not used for hash processing?

how would you execute a shell command from within a perl script

How do I close a file?