Re: joncooney73. I was not aware that Pass 4 Sure & Self Exam Engine (both of whom I'm pretty sure are the same company) are possibly regarded as braindumps. I don't advocate the use of braindumps under any circumstances - if you're not interested in learning about the product, don't take the exam. That said, I don't recall seeing any questions on the exams that were in the two testing engines mentioned.
mchou, I am actually studying for 70-432 at the moment, using the Wrox book by Brian Knight et al. Unfortunately I'm moving house too, so time is limited. I'll try to write something up on it when I eventually take the exam.
Alexander, the Robert Vieira SQL Server 2005 book does not mention the Snapshot Isolation Level, which is why I've stated there are only four levels in SQL Server 2005. You are correct however, the SNAPSHOT isolation levels were added in SQL Server 2005. This is an error on my part. The point still stands that you should be aware of the SNAPSHOT isolation level for the exams.