Which of the following is the correct syntax of a subroutine that makes a positional parameter, say 'right', optional? (Assume the name of the subroutine as example, and left and right as the positional parameters.)

Output of the Perl program? use strict; my @x = ('Red', 'Blue', 'Black'); print `@x = ` . '@x\n'; my ($Mary, $Lisa, $Lara)= @x; print '$Mary $Lisa $Lara\n'; my ($here, $there)= @x; print '$here $there\n'; my ($this) = @x; print '$this\n'; my $this = @x; print '$this\n'; my ($a, $b, $c, $d, $e)= ('a', 'b', 'c', 'd', 'e'); print '[$a] [$b] [$c] [$d] [$e]\n'; ($a, $b, $c, $d, $e)= @x; print '[$a] [$b] [$c] [$d] [$e]\n'; my $var_a = 'Monday'; my $var_b = 'Friday'; ($var_a, $var_b)= ($var_b, $var_a); print '$var_a $var_b\n';

Which Perl command will print the output, 175?

Which statement is/are correct about Perl Pod processors? i) All three well-known newline formats: CR, LF, and CRL must be recognized by the Pod parsers. ii) Input lines of any length must be accepted by the Pod parsers.

In Perl, which option is used for ending a Pod block?

In relation to Perl subroutine signatures, which type of parameters can be nameless?

Perl has a 'goto' command.

Perl programs have this filehandle that is automatically opened:

What does cdup () do in FTP?

What program do: foreach (reverse 1..10) { print; }

What is a hash identified as?