There was firstly an online test which consists of three sections the first section contained three coding questions of hard level and I am able to solve two of them one question is lexicographically larger string and the other one was there was a larger string and an smaller string in which we should choose the window in which all the elements in the smaller string is present keeping the window size minimum and there was next aptitude test containing 25 questions and then there was technical round asking all the theory concepts like os,dbms,cn etc.and the test was of totally 2hrs .