Performance tuning? I've had senior DBA candidates who couldn't tell me two types of SQL Server backups.
If I found a candidate that didn't know DMVs because he used a 3rd party tool I'd hire then in a second. I find more common they get the 'deer in headlights' look when the words 'performance monitoring' are event mentioned.
Yes, I'm in a cynical mood lately.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability