Which exam? There's no such thing as an MCP exam. If you pass *any*
one of the exams for an MS certification, you become an MCP (unless
that has changed). Is there a specific certification you are looking
to obtain? MCAD? MCSD? All you need to do to be an MCP is to pass
one exam.
I would suggest searching for practice materials for a specific exam.
Check out the MS site which lists the requirements: