Applied and got a call within a week . Had 2 phone and 1 on site . phone 1 - pretty basic c questions - pointers , static var etc phone 2 - basic quests on tree , linked list , some synchronization questions,mutiple reader writer question - ntn out of the ordinary . on site - since it was embedded , prepared a lot on OS concepts. sadly nothing much was asked . focused on bits , how to handle overflow of integers . simple lock quests. linked list - insert into sorted LL tree - find common ancestor in BST some deadlock question , how to avoid . given a file that has numbers that represent age of people , find the median . since it is age , we know the range ( 0-100 ) . read the file and store the numbers in array of 100 elements .