Distance

Hi Hasan,
The difference as the name suggests is in the mode of study, while regular courses are classroom session courses where the student has to attend classes; distance/ correspondence courses are more about self-study where the study material is sent to the student and s/he has to understand and learn it on their own. The prospects of a full-time regular management course are better than a correspondence or distance learning course.
The acceptability and recognition of a full-time course is higher in the industry and so the long term career gains are more. Distance learning courses are ideally meant for those who are working and cannot leave their jobs to enhance their education. It is thus an add-on to one's experience and not so much as a stand alone degree.
Those who follow the distance route need to try somewhat harder to get good jobs, but jobs also are available for those who have the requisite talents, skills, strengths, personality and those who fit into the work culture of the firm.