Unfortunately, last date of registration for gate 2017 is over. Moreover, exam is conducted recently i.e. 12th Feb, this Sunday. Although you have lost the opportunity this year but you can appear next year in the exam.
You can check the key for question paper on the its official website. It will be displayed on Feb 27, 2017.
Result will be on declared on March 27, 2017.
Good news is that there is no ” upper age limit” for appearing in gate exam.Only requirement is that you should have Bachelor degree and for clearing exam, you should clear its cut off.