Hi
Minimum score is 700 out of 1000. Question amount vary from 40 to 60 depending on the exam.
Questions are mainly multiple choice and are based around code snippets.
Caddre has a few posts on this exam and I have a blog post on it too
MCP,MCAD,MCSD.NET,MCTS*7,MCPD*3,MCITP*2,MCDBA
Blog:
http://certsandprogs.blogspot.com