The details about the GATE 2011 solution, answer key and GATE forum are available in the official website of GATE.
The official website of GATE 2011 is - http://www.gate.iitb.ac.in/gate2011/
Candidates can click here to get the details.
GATE is conducted jointly by the Indian Institute of Science (IIS) and seven Indian Institutes of Technology (IIT) on behalf of the National Coordination Board.
GATE is an annual exam conducted for admission to Master Degree courses like CS, ECE, EC, CSE and many Bio-Technology and many others.