Yes, if you have taken a JDMIS certificate course that is analogous to a specific diploma module you will be able to receive credit for that module, provided you pass the requisite module exam or exams, and submit the required self-study project for for review by the faculty department head. Diploma students have double the amount of project work as certificate students, much of which is conducted in a supervised, self-study environment. Contact the admissions department for details on the project pieces you will be expected to produce to gain module equivalence.