After sending in an application for the graduate program, received an email to complete the IPAT two weeks later. On passing the IPAT, was called to an assessment centre ( a couple of months later).
Assessment centre:
A written test to assess your ability to think analytically and logically. No actual specific coding knowledge required although if you have done programming it will definitely help you to think in the right way for the test.
Two group exercises, one interview, one presentation, One communications exercise - tests IBM competencies