Amazon Technical Operations Engineer interview questions

First round:Speech and Language test-In this round there were about 30 question and the time time limit was 20 minutes.The question was realted to grammar.Easily crack this round.No preparation is needed.While attending take time because you have given ample amount of time.They will choose the person with top marks.In this first round 8 0f us attended but they choose 3 persons only Second round :Aptitude,Reasoning,Sql,Linux Aptitude-->7 questions.Most of the questions are from percentage,permutation,age,time and work,pipes and cisterns. No choice.You have to solve.Prepare aptitude well. Reasoning-7 questions.Usual reasoning question like chairs,problems on dice etc.., Biut no choice. Linux-->4 questions.Easy questions.Just study commands well Sql-->5 questions.They will a sample table ask us to write code.