1) Had to answer OOP concepts - Polymorphism, abstraction, encapsulation etc. 2) Had to answer cloud/AWS related questions 3) the obligatory SQL question that includes an inner join of two tables 4) had to live code in the language of the job I had applied for (Java) by taking a list and swapping the values of the counter with the value of the counter + 1 (i.e. 1 gets swapped with 2, 3 gets swapped with 4, etc) The tricky part for me was thinking they wanted me to sort the array but after reviewing the question again they just wanted a more basic "swap" of values.