Check out CCDA practice exams here:
http://www.certexams.com/cisco/ccda/exam-details.htm
The practice exams have 200+ most relevant questions with answers. Flash cards provide detailed explanations.
A few sample questions are available here:
http://www.certexams.com/cisco/ccda/questions/ccda_q1.htm
Exam cram notes is available here:
http://www.certexams.com/cisco/ccda/study-notes-ccda.htm
For actual exam parameters, please visit this link:
http://certforumz.com/index.php/topic,931.0.html
Exam Number: 640-864 DESGN
Number of Questions: 50 - 60 questions
Duration: 75 minutes
Available Languages: English, Japanese
Register: Pearson VUE
Well I did the VCE exam today.
And I went very well to much of my delight.
And almost all the study i did was practise exams, and it was extremely helpful. The great majority of the questions on the exam today seemed to be taken out of the practise ones. Just changing a name here or there. It was fantastic study.
Though never used VCE, heard that it is a good exam engine. For a candidate trying to make a career in networking, one should prepare thoroughly and understand the subject. It is not just passing the cert, making a career is important.
My suggestion: study using study guides, use practice exams, take some mock tests, have some hands on experience (using simulators such as ccna netsim (http://routersimulator.certexams.com/network-simulator-designer.html)) and whatever means available.
Just remember: you are going to be a valuable asset to the company that hires you!
Good luck!