In Perl, packages are used for which task?
Running your Perl scripts with a d switch will perform which task?
Consider the following program code:
@array = ("one", "two");
push(@array, "three");
shift(@array);
unshift(@array, "four");
pop(@array);
print($array[0]);
What is the output of this code?
Consider the following program code:
$var = 10;
package Alpha;
$var = 20;
{
package Beta;
$var = 30;
}
package Gamma;
$var = 40;
{
print $var;
}
What is the output of this code?
Consider the following command:
perl runme.pl arg1 arg2 arg3
Given this command issued on the command line, what is the value of @ARGV?
Which of the following describes the functionality of the DBI tables method?
Consider that a file named test.txt contains this line of text:
One line of test text.
What is the output of the following lines of code?
$file = "test.txt";
open (OUT, "<$file") || (die "cannot open $file: $!");
seek(OUT, 15, 0);
read(OUT, $buffer, 5);
print $buffer . "\n";
print tell(OUT);
Which of the following tasks is the least effective in reducing errors in Perl scripts?
Consider the following program code:
$x = 5;
$y = 10;
while (++$x < 10 && ++$y < 15)
{
print ($x $y );
}
print ($x $y );
What is the result of executing this program code?
Which of the following choices demonstrates the correct syntax to pass the argument $arg2 to the subroutine getpass?
