That is kind of an open ended question. A lot of international students come there. Also what kind of job you get after a PG diploma in management depends largely on your personality, skills and past education/work experience.
Bottom line: If you have a bachelor's degree with decent grades, a good personality, some work experience and a positive attitude, then you should be fine. Also, here is link that you might find interesting. Believing it or not is up to you. (Remove spaces)
http :/ /www .canadavisa . com/canada-immigration-discussion-board/ last-warning-do-not-go-centennial-college-t157515.0. html