+ http://bit.ly/vucodes (Link for Assignments, GDBs & Online Quizzes Solution)
+ http://bit.ly/papersvu (Link for Past Papers, Solved MCQs, Short Notes & More)+ Click Here to Search (Looking For something at vustudents.ning.com?) + Click Here To Join (Our facebook study Group)
I would prefer certification. Most of the companies are looking for extra skills now a days.
But not totally relay on passing the exams and get the certificate try to practice as much as you can.