No it is not. But joining a test series from any good coaching institute is what I recommend. Every test exposes some part of the syllabus you aren't proficient with. So you can work and repair yourself with that part.
When is the gate examination usually conducted?
Last date for issue of Information Brochure and Application Form for GATE?
Important dates about GATE exam?
What is the validity of GATE score?
When the result will anounce for GATE 2010?
What is the pattern for GG Paper : (Geology & Geophysics) Paper in GATE exam?
Question Papers bearing the codes : AE, AG, AR, BT, CE, CH, CS, CY, EC, EE, IN, MA, ME, MN, MT, PH, PI and TF?
What are the question paper pattern for XL Paper Section H (Chemistry)?
What are the Question Paper Pattern in SECTIONS B to G of paper bearing the code XE ?
What is the question paper pattern for Engineering mathematics?