Course Number 2272b - Implementing and Supporting XP Pro

I want to begin studying for my first MCSE exam

I have been on a course for Implementing and Supporting Microsoft Windows XP Professional.

Now I want to see some practice exams.

But the Course Number is 2272B, all the exams I can find are numbered 70-something - not even close.

Am I looking in the wrong place for my exam/course number?

Thanks