GATE is all about attitude
To top GATE means you are really going to change yourself and be a smart person. So, your attitude must also change. You should behave like a beater- not beaten. Never try to be secondary to anyone- because topper means you must be on top. If you find something tough- it means you are looking at it wrong way. No topic is tough in GATE CSE.
following link is Kvs_Pgt_Question Paper...