Which of the below would declare a global variable?

To execute blocks of code depending on whether a condition is met, you use:

$_ is used by default:

Which is not used for assigning a value to a variable?

To disable a database error, what parameter is set in the database initialization?

my @b=(1,2,3);my $a=@b;What will be the output of $a?

Which statement is/are correct about the command paragraph of perlpod? i) The '=item' command should be used outside of the '=over'... '=back' region. ii) An '=item' should be the first thing after an '=over' command unless there are not going to be any items at all. iii) The '=headn' command cannot be put inside an '=over'... '=back' region.

Which option is less secure than the other, and should not be used for authentication?

What will be the output of the Perl code? $_ = 'Mark is to the left of red window.'; if ( /\b(red)\s+(\w+)/i ) { print '$2 follows $1.\n'; }

In relation to perltie, a class implementing tied scalar should define which method? i) TIESCALAR ii) FETCH iii) STORE

Output of the Perl program? use Scalar::Util 'blessed'; my $var1 = {}; my $var2 = $var1; bless $var1, 'Class'; print blessed( $var2 ) // 'happy blessed'; $var2 = 'Something else'; print blessed( $var2 ) // 'not happy blessed'; '>