Planning to write CTD, Can able to Frame a architecture, Override call beck events and created Many number of Test Sequence.
Please suggest the way to prepare and things to cover before taking up exam.
I would suggest to go through this document and preparation materials in it. If you have access to TestStand Core 1 course, go it again through; and of course, you can try yourself in these sample exams questions (but now this website in unavailable, most probably it'll be ON again).
If you are enough experienced with TestStand, I guess it'll not be a problem for you to pass it. So good luck!