Measure Up and the like copyright their questions, since they are a business. They have demos you can download, otherwise if you really want a practice test (and they're not essential), buy one.
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