Please any present year 1 electrical engineering student should indicate. Thanks.

hi guys, i have some questions for those who succesfully got admission to electrical engineering,the questions are much but i will take it bit by bit. I always want to know all the info about a particular thing before going into it so as not to run into problem (it could be finance etc) since i have had experience in school before i wouldnt want to make those mistake again, that is why i want to make findings first before proceeding and i dont want to miss this year's admission. My plan is to apply for DE in futminna though i have not yet regularized my previous admission this is because jamb have not yet commenced regularization. But hoping that they begin this month so that it will be ready next month, there are other things that are not ready yet but i hope they be ready then. My questions now;
1.how is the DE exams i.e the pattern, is it just based on the course of study or outside
2. How many DE aspirants are usually per department. since there already admitted student in the class so there will be limit