If someone asked me what is some pros and cons about Objective-C I really don't know what to answer.
I am not really fuzzed about language details, if someone gives me python - I will use it, perl - sure, bash? why not, c++ - sounds like fun and so on. I just don't care, if the language can solve the problem, then I can figure out how to use it for the problem at hand.
Sure some languages can obviously do tasks faster/better because of language details - for example I used Python recently because it was easier to write a script to handle some files, usually I'd use bash scripting.
I've been programming for years and years and I can solve most problems that are thrown at me, no complaints from co-workers or anything like that.
How should I deal with this "interview" question? Just read books? I never got these arguments online where people feel so strongly about whatever language X or Y.