Interview is composed of several random predetermined questions, most focusing on character, following there are some technical questions, then a practical technical test.
The interview is divided in to several stages, there are normally 3 sessions between the candidate and a pair of existing employees/management.
then there will be a practical test, the candidate is take in front of a computer and asked to go trough a series of tasks, normally related to desktop troubleshooting (computer settings, office suite)
Note: if the interview is not going well the candidate will be dismissed before all 4 steps are concluded, however the completion of the interview is not an indication that the candidate will be selected.
At the Service Desk there is a high turnaround, several employees are promoted to new positions each year so if the first interview doesn't go so well keep in mind there may be subsequent opportunities to apply.