Hi,
Just passes Sun Certified Business Component Developer exam today with a 91% score.
I used Head First
EJB to prepare for the exam and all of the non-commercial mock exams listed on the certification links page of the SCBCD-forum at javaranch (especially ejbcertificate.com)
In my opinion the exams in HFEJB and most of the mock-exams were more difficult than the real one. So if you pass the exam in HFEJB and ejbcertificate.com, feel sure to take the exam.
Regards,
Ruud Steeghs
SCJP,
SCJD, SCWCD, SCBCD