The answer to your question is simple: it depends. It depends on the position, on the job you'll do there. For example, if you were hired to maintain legacy CGI scripts running in Perl 5.8.3, knowledge of modern OO frameworks would not only be useless, but almost even an obstacle (that's my experience, at least).

On the other hand, I'd expect a junior programmer to be able to answer any question solvable with Learning Perl, and probably to know some parts of Intermediate Perl, too. What's more important for me is the interest - does they read any blogs, participate in contests, open-source projects, etc. But again, YMMV.