It's very easy for a good interviewer to tell the difference between someone who's memorised answers and someone who know the topic.
Don't exaggerate your skills.
Don't lie to the interviewer
Don't be afraid to say 'I don't know' (but have an idea how you'd find out)
p.s. I used to ask an 'unanswerable' question in interviews, just to see if the candidate would admit he didn't know or if he'd lie to me.
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)SQL In The Wild
: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass