by Robert Sample » Fri Aug 24, 2012 6:49 pm
Rather than worrying about some specific set of questions, you should be worried about learning the language. If you know the language, then the actual questions -- no matter what they are -- will be answerable. If you don't know the language, then you should not be asking about PL/I interview questions.
When I interview someone for a programming position, I make sure to have them code up a small program in the language. Whether or not the program solves the specific question posed (which actually provides good insight into the candidate's logical thinking skills), it's a good and quick way to see if the person knows enough about the language to avoid obvious syntax problems, uses appropriate indentation and white space, and understands the punctuation for the language. Knowing a specific set of interview questions would NOT be much help in such a situation.