There are two interview rounds. First is technical question paper having some programs to write and second is technical face to face round with the manager of the company. They basically checks the confidence, ability to learn and basics of an employee.
Question types may be like -
1 . The questions in technical papers are based on life time scenario. like if we want to make a telephone directory like U.S. then which data structure will be good with respect to updating an record, deletion of a record etc. There may also be some simple question like finding an square root of a number.
2. In technical round they will judge you for only your basics of any technology or data structure.