It doesn't. If I saw any of these on a test for a job, I'd probably walk.
I think you should gauge the quiz as a refresher or an exercise in what else you can learn. There are many aspects to learning Perl and after 4 years I haven't even come close to learning half of them. A quiz like this helps to shine a light on other things I didn't know.
Barbie | Birmingham Perl Mongers | http://birmingham.pm.org/
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