Practical Test in Upcoming Job Interview

I will be attending a job interview for a web administrator position in a few weeks time. I haven’t gone for a job interview in years since my first real job is the position I currently have.

The company that will be interviewing me made me aware that prior to the interview I will be asked to perform a practical test that involves using a computer and shouldn’t last more than thirty minutes. That is all the information they disclosed.

Being out of the interview mode for years, I’m not quite sure what to expect as to what activities will be asked during this Practical Test.

Can anyone provide some feedback as to what type of tasks I may be asked to perform during a practical test?.

Thanks.