Ca final exam leave

My attempt is due on November 2014. My articleship will complete in April 2015.

Apart from that 3 months leave that CA student gets for exam during the articleship, can i avail extra leave for exams...??

If yes, then what will be the consequences..?? Will i have to serve to my principal for the period as much taken by me on extra basis apart from 3 months leave..??

Kindly Solve...

Thanks in advance.