[noddingham]

I'm going to be pedantic and challenge your use of the word 'learn' here. I tend to agree with the notion that being able to say 'I don't know, let me find out' and then find out quickly with a correct answer is in general a Good Thing™, but I wouldn't equate that with learning the thing they just looked up.

[smcin]

The difference between 'learn', 'cram', 'regurgitate' etc. depends on the level of understanding required, and the length of the recall.

And whether the interview is just asking definitions or silly certification questions, or things requiring deeper understanding.